I think the payback for heating with wood is going to improve significantly soon, sooner in Canada but US will follow. Carbon Taxes of some sort or another are coming and the logical place to implement them is a surcharge on fossil fuels, be it heating oil, gasoline, diesel, propane or natural gas. I expect there will also be an indirect carbon tax like there already is in New England (RGGI) on electric power generation. If and when the current administration goes away in the US, the Clean Power Plan or something quite similar will get enacted and its ultimately an indirect carbon tax that get spent to force a regions generation away from fossil fuels. Taxes on fuels and power generation are easy to do and spreads the burden somewhat. In theory at least a portion of the tax initially goes back to the consumer to reduce their energy use although I expect in few years it will get tapped for general revenue, like has happened to RGGI in some states
. Firewood on the other hand is a PITA to collect taxes on especially if its cut on your own property. There is no place to put a tax and is regarded by most bodies as carbon neutral over the long term so it doesn't slot in with fossil fuels. In some ways it close to making moonshine where the fed outlaws it because they cant figure a way to tax it.
There is lot of effort out there to shift folks away from fossil towards electric (why do you think the utilities are pushing mini splits?) under the guise that the electric power grid can be made green easier. Of course in your situation as well as many Hearth.com folks you probably live in a rural area and the last to have power restored after a weather event. With increased heat in the atmosphere, folks along the Atlantic like yourself are going to be seeing more radical weather swings and more extreme weather events. This means potentially more and longer power outages. It likely your propane is a waste product from crude oil or natural gas extraction and therefore you are on the long end of supply chain unless Sable Island magically comes back to life. Its likely that the propane is coming in via ship from far way and expect the local storage is limited which leads to supply shocks when a few winter storms in a row lock out the harbors (It happens in northern new England). Heating oil is more reliable but still price volatile as the Irving refinery is relatively close by to you. The nice thing with wood is once its cut and split and under cover it lasts a very long time. No need for a delivery truck just a wheelbarrow from the woodpile to the boiler.
Wood on the other hand is local, if you cut it yourself no direct money gets handed out but there is indirect money to the chainsaw dealer, the guy who sells you gas and oil and the local doctor if you are not careful. Even if you buy wood, its local, the vast majority of the cash generated stays local. When buying fossil the vast majority of the money heads out of town never to return. No such thing as a wood embargo. As long as the housing density is low and there aren't local environmental conditions like some areas in the western US states, if you have to motivation to cut or buy wood you can heat your house and no one can stop you. Design the system right and your power usage will be minimal which can be supported by a small generator or battery storage fed from PV or wind (if you have a good site) as the price comes down.
I also see burning wood as a good feedback loop to reduce energy usage. When you are having to feed the boiler out of the woodpile you cut and split you are probably going to try to reduce the volume of wood you need to move. That's going to mean seasoning it properly, sealing up air leaks and possibly improved insulation as well as modifying the habits of the occupants.
Make sure you factor in that given you have radiant heat in place, it most likely going out to the floors at low temperature far lower then conventional baseboard, that means your storage volume for the boiler can be lot smaller as you have a lot higher temperature difference you can work with than conventional heat. My conventional radiators run on stored heat from about 185 F to 140 F (delta of 45F), in your place you can probably go from 185 F to 95 F (delta 90 F), thus you can store twice the amount of heat for the same volume of storage. The lower temps also fit in well if you want to supplement with air to water heat pump technology that is slowly coming to market.
By the way if you are thinking of going with wood, the time is now to get your wood pile started two years before a boiler would be up and running. If you decide not to, you can always sell it at a premium as seasoned wood which is always in demand. Any new boiler or stove you buy needs seasoned wood and if you wait to get your wood while the boiler is being installed you will be very disappointed at your investment for a year or two