You mention plowing, gravel road maintenance, land clearing, and bush hogging a couple of small fields and that the
L3301 is too small. You probably want to go for a relatively heavier unit with filled ag tires as you are mentioning mostly ground-engaging tasks. Also you may do better with a gear transmission than a hydrostatic for all of these tasks as a gear transmission is better at "going the same speed all of the time" work such as bush hogging and also is more robust and efficient for doing ground-engaging work such as plowing. The Kubota MX5800/6000 are only available with a hydrostatic transmission so I would eliminate those models. The Deere 4M series and Kubota MX5400 however are available with gear transmissions. The Deere 4M line is available with the 4-speed/3-range PowrReverser hydraulic wet clutch reverser transmission, synchronized on all gears within a range. The Kubota MX5400 is available with a 4-speed/2-range dry clutch fully mechanical transmission which is synchronized only in 3rd and 4th gear. One thing of note for plowing is that the Deere 4 series is not available with draft control but it is an option on the Kubota MX line.
If you want another unit to look at, the LS XR series (also rebranded as the New Holland Boomer and CaseIH Farmall) has a four-range, four-speed synchronized dry clutch gear transmission option. I don't recall if they have draft control (I don't remember seeing this on the one I ran) but they are solid unit as well. The CNH versions are quite pricey though and more along the lines of a Deere 4R in price but closer to a 4M in options. The LS version is more reasonable in price but their dealer network is much sparser.
@jeff9366
A 5000+ pound bare tractor weight would put the OP into a full sized utility tractor, such as a 3 cylinder Deere 5E or Kubota M60 series. I have spent seat time on 2WD and MFWD utility tractors as well as medium and large-framed compacts and will say that:
1) A large-framed compact such as a Deere 4M or Kubota MX will be a noticeable step up from a medium-framed compact
L3301, particularly if the larger unit has filled ag tires and the smaller one had any other type of tire (air-filled ags, or any kind of industrial or turf tire.)
2) A 2WD utility tractor with filled ag tires is about the same size and maneuverability as an MFWD large-framed compact with filled tires but you sit about a foot higher and will weigh 1-2 tons more. The utility tractor gets better traction, handles loader loads better, and will in general grossly outwork the compact. The difference is roughly as much as between the medium-sized and the large compact. The real differences here is that the utility tractor will have a gear transmission, few to no electronic gewgaws, will be able to run noticeably larger implements such as standard hay equipment, and a much lower price tag. The compact has the option of a hydrostatic transmission and other electronic features at a much higher price. It often tends to be the transmission and electronics that steer people in their direction.
3) MFWD utility tractors are far less maneuverable than a large-framed compact or 2WD utility tractor as the straight front axle with planetary hubs require front wheels only slightly smaller than the rears on the compact to get any ground clearance under the front differential. This makes for a much wider turning radius. Plus, the loader needs to be located higher and further forward than on the compact or a 2WD unit to clear those front wheels, so the machine ends up being noticeably longer, taller, and more difficult to work with in close quarters. These machines have their uses for sure, but it isn't in a situation where somebody would be cross-shopping any kind of a compact.
I am really shocked at this. Why in the world would Deere not offer draft control on their 4 series tractors??