I've got a 8' disc that I have taken some outside cutters off to make it more like a 6'. 6' 3pt mower, 2 bottom pull behind plow. But I plan to get a 6' roto tiller in the future. Mostly food plots and trail mowing/repair. But over the years I have skidded a lot of oak and popple logs, so I plan to continue this to pay for the tractor. My little oliver has been pretty good for this so far but I think its time to up grade my tractor and some equipment. Wife said it alright. $wd would be nice but the little oliver has worked good for 25 yrs so far. Sometime I have to make two trips for a big tree but most times I can get it done in one if not to tight of corners.
For logging I will have chains on the back and the rear tires will be loaded. Won't be perfect but should work I think. I will continue to look for 4wd but they do seem to be scarce unless I go new.
If all you have is a single tractor, 4 wd is a must. Especially with a loader... In an operation with multiple tractors, it pays to dedicate the tractor to the job. 4 WD is a frill for a mobile power unit ie feed grinder, auger, blower, etc