Here are some thoughts....
My first one, is wait till you get there and buy as you need them ? Unfortunately, the others are right, no one machine suits all jobs, but a tractor with decent 3ptl capacity can do a lot.
Even when just thinking tractors, you will find many often have more than one and more than one size.
I had a small stump to remove a week ago, bugger was it hard, 2 compact tractors, diggers, ripper & chains etc for this one stump, no woner they cut it close to ground and left it, it was like it was cemented in, no joke, it was prob 4+ hrs all up, tractors, even in 4wd with diffs locked simply dug holes trying to rip it out, ripper broke high tensile bolts, broke post hole digger (for a different reason though), in the end basically my labour with a bar and shovel is what got it to a point that the tractor could twist it out, so, what I am saying, is they are not any good really for stumps or clearing of old, intact stumps in hard ground, nor are they a quasi cat crawler. On the other hand I had a huge tree that fell down, was in soft soil, it had rot in the core, after sawing what I wanted for wood, IS compact tractor had no prob ripping roots, pushing what was left around and loading onto trailer, prob near a tonne a piece in each stump piece, was prob 30 mins work with machine, vs 4hrs for that puny stump that was all of 30 kilo once out.
Pasture, well I avoid cutting anything I do not have too, I get stock to do that
I see no way of avoiding many and varied items, unless you want to spend each day doing many time consuming things, it takes long enough when you have th e right or nearly right tool.