If you have a sufficient amount of clearing and brush hauling to do, a grapple would be handy. I sure wish I had bought one when I was clearing my land of underbrush. It would have been much easier than piling everything on the FEL arms by hand.
If you can burn, not much use for a PTO
chipper, just pile up unwanted brush, let it dry and set fire to it.
Tool box is about the first thing you will want to put on your tractor to keep your spare pins and a few wrenches. I mounted mine above the left fender by using self tapping screws into the FOPS upright.
A box blade is likely a necessity if you plan to do a lot of hillside leveling.
A rotary cutter is needed if you plan to keep the underbrush down. Lots of small stuff can just be shredded up and left to rot in place, a couple of years and it is gone or you could then use the grapple to scrape it into piles for burning.
A roto-tiller is great for preparing a garden spot, just don't overdo the tilling. You don't want it in a powder.
Lots of folks build a 3 PH carryall which is OK for hauling if you don't have anything else to do it with. I prefer to use my Kubota RTV 900 with hydraulic dump bed to haul everything I need to haul. I couldn't do without it. I would likely give up my tractor before my RTV.
Hopefully you have an air compressor because that and an air powered grease gun makes greasing a one man affair. They are much cheaper than the $120 battery powered ones and I have never had to grease my tractor or equipment out in the field so portability is not an issue. Also need that compressor to keep your tractor tires aired up properly. Nothing spoils the day like rolling a tractor tire off the rim due to low air pressure. R4 tires with their 8 ply or more side walls don't flex the sidewalls much when low, they just roll off the rim when the air pressure gets too low <BTDT>