Welcome - and I'm sure you'll get loads of advice on here.
Looks like you've got quite a project on your hands! Personally I would advise you to look for some work in the world at large in order to help you both pay for projects on the land and to give you something to live on.
I'm almost 50. We've lived on our land for over 20 years through various financial situations. I've found that: when you have time you don't have money, and when you have money you don't have time.
Yet for getting things done, I have done best when also working beyond the land. For the first ten years we were cash poor and so could do little on site. Lately, now that I work out 4 days a week, we have had more cash flow and we've got lots more projects going. I still save seed like mad, try to graft, and use every ruse I can to cut the costs..... but I CAN now buy in materials, equipment and plants to make the jobs happen.
Sounds like you have a nice site. Here the thorns and dog wood also thrive. I must try grafting onto the blackthorn - I've heard plums do well on them, but not yet tried it.
Clay is a good base I think as it is supposed to be mineral rich. I imagine a few ponds might work. We have clay and dug a pond here which filled itself from the water table.
Just it is at the bottom of our land. Luckily Ireland is fairly wet most of the time.
We also have some bees - but 100 hives! WOW... you must have some fairly good sources of flowers locally. I can't imagine managing so many hives.
Anyway best wishes with your field... you're bound to get loads of ideas on here.... and probably a few disagreeing with my advice on work....