I've got a 30hp 4WD Kubota BX7800 with a FEL, 6' Woods Brush Bull mower and a 5' tiller. The PTO is 22hp and it drives the mower great. The tiller can put in a real nice food plot and you won't need to buy as many implements. Depends what you want to do. I've got a great 1 acre food plot that looks like a golf course made out of clover.
I didn't put anything in my tires, but I leave the 400 pound tiller on back for ballast all the time. I need to get the JD ballast box so I don't ding up the tiller too much though.
Keep the ROPS (rollover protection) up and your seatbelt on. I haven't flipped it over yet, but man I've come dang close too many times working around the lake moving logs, running over stumps and holes.