I have bought three tractors, all with FEL. With the first tractor I didn't really know if I needed an FEL having grown up on a farm and none of our tractors had FELs. I quickly found out how handy they were. My last tractor purchase was a TLB (tractor/backhoe/loader) and I quickly realized how much I had been missing by not having a backhoe.
Since you mentioned a backhoe, I have never seen a backhoe on a tractor without an FEL although I suppose you could put a 3PH styled one on any tractor. The FEL is necessary to help stabilize the tractor while digging and also to level it front to rear when on a slope.
With only 1.5 acres, you may not fully utilize a backhoe but they sure save you some backbreaking shovel work. All my shovels are rusting down now that I have my TLB with hydraulic thumb. I used it for planting when holes need to be dug, ditching for additional water lines, digging up rocks (my land grows plenty of them every winter), removing unwanted trees, holding up felled trees so I dont get my saw in the dirt, picking up large boulders that are too big to lift by hand and ungainly to try to get into the FEL. You really need the hydraulic thumb for some of these activities so you aren't constantly adjusting the pitch of the thumb. I am sure there are many other uses you can think of. The only real down side to having a backhoe is the cost.
I suppose with your size lot, a small SCUT like the B25D Kubota TLB would be ideal size. It may take longer to do a job than with a CUT but you will enjoy the tractor time. You can get them with a belly mower also so it does multiple duty. The downside to the SCUT tractors is the low ground clearance of about 12". If you wont be taking your SCUT into woods and underbrush, that should not be a problem.