Dan,
what is the average annual rainfall on your property ? Rainwater harvesting is valid for any number over 10" annually (Bermuda,the desert SW and some Caribbean islands) Hint, a submersible vacuum/filter (think swimming pool) pump system injecting ozone on re-entry purifies and clarifies the rainwater saved. Cost about $3k for 40k gallon cistern.
Mayhap you misunderstood my comment on cancel the well. By the time you drill, store, disinfect and distribute well water you have spent some serious $$$. And some aquifers deplete quickly. Are there local regs on how you can "well" ? Check the A & B lists of the nasties you can find in well water. Some metallic compounds are expensive to remove. Some bacteria don't promote good health either.
If you wanna well and the geology supports try a gas well. Used for agri purposes you get free fuel to run your generators, grain dryers, etc.
One of many techniques to prepare a frame for add on's is to have a blind wall (no windows, no plumbing, no significant wires). In the posts of this wall cut some mortises facing the expansion direction. cut some temp tenons and fill the holes. In the future you remove (carefully) the blind wall , the temp tenons and attach the new frame members to the existing think ahead mortices.Then move the blind wall components to the next "later" wall face. Tedious but it works.
work safe, have fun
deralte
