It depends on the individual setup, but one tractor and taking things on and off (like the backhoe) can be a long involved hassle. Enough of a hassle that it may not get used. For example, I used to have a Kubota
M4700 tractor with a FEL. It was too much hassle to get it on and off (1-2 hours including the front weights) and it was too much weight on a 2wd unit to leave on all the time. So it sat in the barn 99% of the time. Of course the big mistake there was a FEL with 2wd.
Back about 2004, I bought a Kubota
B21 TLB. Convenient to jump on and use at a moment's notice. I put 400 hours on it in 5 years.
I am NOT in the camp that a FEL is so useful. I pretty much only use mine for moving dirt or gravel. For moving firewood or hay, I use a trailer.
Bottom line, it may be more of a hassle to put things on and off than it's worth. Also, on hilly terrain, the BH raises the center of gravity and makes the tractor less stable.
Now is a good time to buy used construction equipment. However, some of the stuff out there may be maintenance headaches....or you might find a good one.
Ken