I like the thinking of renting a mini excavator for serious diggin, planting larger trees,
ditches, running water/elec lines etc. much more efficient than trying to do
with a backhoe on the back of a tractor, but if you have tons of work to do
it's nice to have your own hoe for bigger projects.
if you don't see a lot of heavy backhoe work for a while, a sub cut with mower
and blower would be great for mowing a couple acres and handling snow around here.
front loader is handy for moving topsoil/mulch/stone if needed, and you can certainly
dig out areas with the loader, strip topsoil for garden beds, fire pits etc. a post hole
digger for the 3ph can be used to plant trees, drill for posts to build decks, swingsets, clothesline posts etc.
I don't think you really need much larger, unless your loader needs are going to be heavier.