Sounds like an L45 or L48 would fit the bill perfectly for what you want to do. The dedicated TLB's (tractor/loader/backhoe) have more hydraulic pressure and flow, which of course translates to more lift/dig capacity. They also have stronger/beefier frames and weigh quite a bit more as well.
The only two disadvantages that I see, is you can't take the front end loader off (really not a big deal) and you lose some PTO hp since more engine power goes to the hydraulic pump, vs PTO.
'02 640E, '13 990A
“What the Lion is to the Cat the Mastiff is to the Dog, the noblest of the family; he stands alone, and all others sink before him. His courage does not exceed his temper and generosity, and in attachment he equals the kindest of his race.”