Pex Tubing and Pump Question For Future Storage For Outdoor Furnace ( CB 6048)

I intend on having a storage tank in my basement eventually for my outdoor wood furnace. My question is would I be better off going with the 1 1/4" insulated pex tubing and a larger pump so I can have better circulation for when I get the storage? I did think long and hard about putting a wood gun in an outbuilding but the price kept increasing and so did the delivery date. Also looked at the CB 2300 but I'm not a big fan of new technology . Since Idon't have any neighbors and I have alot of wood, I chose the CB. My payback will only be two years and I can always see how this works out. I also plan to heat my hot water for the summer with some old solar panels I have been stroing in my barn.
Thanks