Three wheelers are very
dangerous and prone to roll over especially on hills like you have described.
That is the reason they are no longer made. We even had several DNR rangers killed on them in GA when they had them for service. If you decide to buy something later, get a Honda. You can find used Fourtrax, Recon, or Rancher models for reasonable prices that will do all you need. We run a early 90 model fourtrax 300 2wd on our farm in GA. And it really handles work and fun well. Don't buy off brands, they are extremely hard to get parts for (and you will need them). Buy something a little bigger than you think you'll need. Afterall, you will get bigger, and trying to sell a little one and buy another will be a pain.