Broom and blackberry I have cleared with my B2601 and mid mount mower, plus my FEL. I did not dig, I just pushed. I've also cleared gorse, which is harder, but I can push it over with the FEL.
The digging you describe isn't what I'd call backhoe digging, a lot of it you'd do with a FEL and a tooth bar. It's more levelling than digging. Also take a look at what you can do with a grapple, you may do a lot of clearing that way - refer this thread that popped up again recently.
I'd fill drainage ditches rather than dig them. An FEL will do that. I'd push and then bush hog blackberry and broom. I'd have a go at the rock piles with a grapple or FEL, or get a dedicated machine on rental for that. Bumpy ground is a tiller, or a box blade, or maybe FEL with tooth bar.
So, I'm still on the advice I gave a year ago. At least the B2601, but realistically for 10 acres I'd be an L. I'd much rather an L2502 without backhoe than a BX with backhoe. Sure, there are some tasks you just won't be able to do without renting. But they sound like about 5% of yoru tasks. Everything else will be substantially better with the L than a BX.
A BX is really too small for work out in the fields - it's a home and garden machine. Not much clearance, and since it's built down to a size it doesn't have the leverage and push needed for many tasks. Don't get me wrong, I had a BX for 3 year and loved it, it's a capable machine. But I had it on groomed lawn the majority of the time, when I took it in fields I bottomed it out really quickly, ran out of traction from the small tires, had a rough ride from the small tires, and found the 3pt to be quite limited in operation - the tractor is so low you don't have much range of motion. My B2601 is substantially better. You have way more property than me, so whilst a B or an LX could do the job, I think an L is the sweet spot. The L is also an economy machine, so you can get an L2502 for about the same money as an LX, and only a little more than a B2601. For your use it's a lot better buying.
