Yes, you want actual forks. Not sure what you mean by "is FEL easy to explain"? If you are asking what FEL means.....that Front End Loader
A MMM is typically a better set up than a Rear finish mower (RFM). They are more maneuverable, follow the contour of the ground better, and typically will leave a better finished cut. And you dont have to constantly look behind you to make sure you arent swinging into things, or mowing off the wifes flowers. But MMM's are typically a bit more $$$ than a 3PH mower, and can be more challenging to hook up and take off. And if you choose to leave it on....that can be nice as you can have your mower on as well as something on the back and dont have to fool with it every week when you want to switch between mower and something else. BUT..... leaving it on may not be the best in the woods, as you loose ground clearance.
As to the 3rd remote. Rear hydraulics (remotes) can be used for a number of different accessories. Required.....no. Nice....yes. You can run a hydraulic toplink cylinder or sidelink cylinder (instead of threaded style you have to get off to adjust). You can run hydraulic scarifiers (rippers) on a box blade, hydraulic angle on a rear blade, or pull around some of the old farm equipment like disc's or tow behind bushhogs that have hydraulics for raising and lowering the transport wheels.
Most will advise to get at least 3 rear remotes. That way you can have both a top link and side link cylinders, as well as a spare for things like angle on the rear blade. Doing that gives you basically a fully hydraulic 6-way blade right at your fingertips without ever having to get off to amke a manual adjustment.
