Looks like you need 2 flat faced male skid steer connectors for the grapple those are ag pioneer ends. Get either new pioneer females for tractor or male Flat faced. I would go skid steer and alternate the set to ease install. One male female per side to the tractor or grapple.
1. Yes to float
2. Yes to batwing, you may have to feather it as you engage the pot. Mine pulls a JD HX15
3. Loader is not hard to remove
4. I had the 3scv installed, simple and easy for most mechanically inclined.
5. I am adding the WRLong to mine this fall, so it looks easy enough.
Good...