LeadPoison,
How much time will you be able to spend on the tractor doing the things you've listed? If you live close enough, or have local help, a large CUT may be enough. But if you can only get to your camp a couple of weekends a month I can say you're going need a machine bigger then a 45 HP CUT. I live a good way away from my cabin and understand the time issue; there is no way such a small machine is going to do what you described if the available time is very limited.
In the spring you want to plant 42 acres of corn. That means you have to do something like mow last years rye crop, plow, cover the fields with fertilizer, disc and then plant the corn. Then the fall planting will require at least four more passes over the fields.
How many miles of trails will you be bush hogging three of four times a year? Will you also be dragging a box blade to keep them in good shape?
I'll share my opinion on your other questions, but keep in mind my planting experience is limited to 1 acre plots. The tillage implements you'll need depend on the technique you use, though with 42 acres I doubt you'll want to use a rototiller. Using the traditional plowing method for the corn you would need a moldboard plow, disc harrow, spreader, corn planter and a sub soiler. For best germination on the rye you would need to add a grain drill, but you could probably get by adding a chain harrow.
You'll need at least one rotary cutter, but maybe two would be better. The field mowing will need a wide light duty cutter but the trail maintenance might be better done with a medium width standard duty model. A box blade or rear blade would be needed for road maintenance.
While a FEL is a great tool to have, nothing you mentioned requires one. In your case it might be better to put the money toward a larger tractor. Without a FEL 4wd isn't as useful and a 2wd model may have equal traction as a smaller 4wd model costing roughly the same. The tasks you listed don't require a lot of speed or direction changes so a hydrostatic transmission will not be an advantage.
With the budget you mentioned I think deerefan is pointing you in the right direction, toward a no thrills 2wd utility tractor. I have no opinion about model or manufacturer for those type machines, but I would suggest you don't rule any of them out before thoroughly researching the options.
Good luck in your hunting, for both buck and tractor! /forums/images/graemlins/smile.gif