Oksportmans and firefighter guy gave the best answers. As a Realtor I much prefer my clients to use a local lender that they can personally visit and I can keep in contact with through the entire transaction.
assuming your ground is level and your not on a hill, the pump idea is a good one, Water collection in some kind of sistern with a gravity fed slow drip irrigation system.
I would also maybe work on digging a trench to the stream from your garden if the terrain is right for that. digging a...
also look into smaller cattle such as Zebu or Dexter. Don't let any fools tell you the meat is not good. No the steaks are not as big but if you get alot of Hamburger you cannot tell the difference between a zebu and an angus. The Zebus are the ones I have experience with, they can do excellent...
you can do a ton on 5 acres. there are many many many books on square foot gardening. the backyard Homestead is a fantastic book that gives you layouts for plans on as little as a quarter of an acre. With the proper care you can absolutely thrive on 5 acres.