I'm going to suggest something a little bigger than a CUT, I would recommend a utility sized tractor. I have done a lot of land clearing with my L series Kubota (CUT), mine is an '02
L4610. It is going to be directly comparable in performance as any of the larger L series when referring to FEL capabilities. It only has 39pto HP whereas the largest L series I believe have right around 52, but that won't make a difference for FEL performance.
I suggest going with a utility sized tractor with a hydraulic clutch. Not that you can't do all of what you want with a smaller CUT, but when a larger tractor will do 'more' and on top of that, I think it would be more useful for you once you get to the leveling and planting stage for your pasture.
Regarding price, I purchased my tractor used, then added 4 rear remotes, a 3rd function valve for the FEL, a dedicated grapple, then purchased heavy duty and good quality used implements that would be very useful in your situation, such as a hydraulic feed
chipper, a heavy box blade, a beast of a stumpgrinder, a heavy duty rotary mower, as well as a few others (see sig) and after adding everything up, I still have less than 30k in this package.
Try not to spend all your budget on the tractor, you'll find that there are a lot of implements out there that could help you immensely (as well as be a lot of fun) that you may not be able to purchase if you spend it all on the tractor.
I'm not sure how long the cedar stumps would take to rot, but I imagine you would want to pull them out with the tree, rather than leave them. If leaving them is an option, then look into the "turbo saw" which is a saw that attaches to your PTO and can very quickly take down all your cedars. However, with this saw, I think a CUT with HST would be preferred.
I do like the idea of the tree puller, and I would like to add one to my arsenol, however, I've pushed over many many trees (a lot bigger than your referring to) with my grapple, and the advantage there is that you can push over a bunch of trees, push them into a pile, and pick up the entire pile all at once and go pile it.
If your going to burn, a decent tractor with either HST or hydro clutch, and a grapple, really is all you need. However, there are 3 point implements that can help you a lot as well.
Check out this link for a bunch of pictures of land that I cleared with my tractor and grapple.
http://www.forestryforum.com/board/index.php?topic=61752.0
I do think that a CUT tractor would do everything you need, but I would recommend a utility as I think it would do what you need, quicker.
Also, click the link in my sig to my grapple, and you'll find many pictures of what a grapple can do (some repetitive to the other thread)
I like your outlook, Rome wasn't built in a day.....Brick by brick...