Don't forget to consider the implements you plan to use. If you want to equip the tractor with R4 industrial tires, be aware that the width of the MX4800 is around 73". This could be a factor for existing or future implements with a 72" width. The width of the L4701 with R4's is around 69".
If you like the slightly smaller and lighter L4701 frame but are concerned about FEL capacity, you might consider the more expensive Grand L4760. That tractor uses the LA1055 FEL which is similar in spec to the MX4800's LA1065 FEL. I'm spending your money here but the L4760 also comes with a host of features you might find useful if you spend a lot of time on the tractor.