Welcome xerophan,
Not a senior, but a willing sharer.
1) Too subjective. You already have some knowledge, but there are plenty more ingredients. Do a proper planning, raising capital, cost study, responsibility allocation, cash projection.....etc. Most importantly exit plan (best / worst scenario). Sit down with your partner start if off and things shall fall into places.
2) I don't think there is "a better choice", (a shit to you may be a gold (fertilizer) to me). I guess most important is what crop you know best, what crop grows best (on your land, working in harmony reduces your cost tremendously), what crops is marketable........ Intercropping is nice, provided you know how. Land can be rented, lease or purchased. 3-4 ac you'll be looking at helpers?
3) You are most welcome to visit / participate if you are near my area. We can learn together.
I'm one of those that feels that Ag need a revamp with new blood (ideas/technology/strategy.....)
So far, we're trying to learn what we can. But I think it's best to visit farms or talk to experienced farmers and learn their management systems. We're willing to travel even if it's not in our vicinity.
Is it hard to get government funding for our Ag business? We will do a proper business plan or any preparations needed.