I initially intended to have the WH there, but access is still an issue.

Note which side of the framing is dimensioned. The clear space between studs is 5'-1." I may actually increase this for a roll-in shower unit once I check some commercial options.

I thought about a solid ridge beam and rafters like the original 1947 house had, but trusses are the cheap and fast solution, and adding a stairwell for an attic and basement would add a lot of extra complications.

And yes, even I remember when land was as low as $1-3k/acre in my rural area. No more. Bare land costs more than my parents paid for 10 acres and a house almost 30 years ago.