Lot to think about. I would maybe mentally, or on paper, kinda built out the package of impliments you will buy/want to buy/possibly add; and see what works with which machine.
In three years I've only used my buddy seat a few times. It's nice when you want to bring the Grandson for a ride.
Here is a picture of me and my Grandson in my 4707 that won us a bunch of fun Massey stuff in a photo contest.
When comparing the two Massey tractors, remember that the 4707 is the lowest HP for their Ag tractors. It's the exact same tractor as the 4708, 4709 and 4710. Same engine just tuned differently. With a tuning kit, people have brought the 4707 up to over 100 hp. It voids your warranty, but for those baling hay, it's been a significant upgrade.
Everything about the 4707 is bigger, heavier and stronger.