If it were me, I'd try to get an assessment of the well BEFORE closing the deal.... land with no water or insufficient is true hard scrabble
You'll need water storage.... BIG gallonage.... for the house and whatever irrigation you want to do..... suggest drip irrigation...
Attachments:
FEL with quick attach, heavy duty bucket, chain hooks on the bucket, toothbar.
A small trailer to pull behind the tractor or other vehicle to carry your tools, supplies, etc...alternatively, or in addition, a carry all on 3PH... with trailer hitch on it so you can pull the trailer and drop it at work site.
If soil allows, consider strongly reading the threads about using a "subsoiler" to bury plastic pipe by just pulling it into the ground... no need for ditching.
If you purchase a backhoe for your tractor, doubt you will need a post hole digger. No more fence than you have, you can dig the few end posts by hand ... I've done it a lot...I recommend using the FEL to press T-posts into the ground... as line posts...
If you are going to be doing work up in the air... think seriously about getting a quick attach platform for your FEL... for safety... I've stood in my FEL bucket... but would not want to work from it for hours on end.... dangerous for falling risk.
What size tractor are you planning on.... ??
I have found a hydraulic dump trailer to be very handy for moving dirt around...
Out there, I'd consider a cab seriously.... allows you to work even in extreme heat, dust, cold... and is safer IMHO...I love mine.
Garden... a disk harrow to turn over the soil, mix it up
... a spike tooth harrow to smooth things down.
....a walk behind seeder with numerous plates to plant all sorts of seeds