I think your racks look lovely. If you have space for more, I'd say go for more. We have just shy of 1/4 acre in a suburban city, and we store wood right against our brick house. We have a lot of oak, and it helps to season it to have it baking there. Weeks ago when we had one of those early spring heat waves, I measured the temperature of the brick on the southern corner at 130*.
We also have a small deck on the side of the house under which we keep a fair amount of wood.
We tried a new homemade rack against a fence but after stacking it very carefully twice, and having it collapse almost immediately, I gave up and started a holzhausen (holzhaufen, holzmiete). Here's a picture of the start of it.
It's about six feet in diameter and now perhaps seven feet tall. It tapers up like a beehive, and I call it my organic yard art. Neighbors and friends seem to enjoy it, and it has proved sturdy so far. Sturdiness was my biggest concern, even over quick drying (I'm sure a covered single stack would be better for that), but we have small children with small friends who play in a small yard. The woodpiles are not playthings, and we are firm on that, but we wanted to protect even disobedient little people.
My eighty year old mother visited in April and saw the holzhausen. She went home and built a bigger one!
On a different note, we've heated 2,500 well-insulated feet with our Lopi Revere insert. We are planning to change to a Blaze King Princess Insert as well, primarily for our shoulder seasons down here in Virginia. It will be interesting to see what happens with our wood consumption (though it won't be a really fair comparison as we are planning to insulate the liner and install a block-off plate as well.)
Is there any work you can do on insulating and air sealing your house? That is really such an excellent investment year round and year after year.