I was just looking at a couple pictures online of the 110 cabbed ... It looks like there might be issues with detaching the backhoe and using the 3pt.. Looks awful tight back there, and in a couple pics it looked like the cab was bolted to the backhoe frame
The rear glass section on a Laurin cab is mounted to the backhoe section. When you remove the backhoe this section stays on the hoe but you can move the rear glass back to the tractor to enclose the cab if you need to. There is an additional lower panel below the rear glass that goes on quickly too. You can choose to have either the backhoe or 3pt set up and have the cab enclosed, works pretty well imo. Takes an extra 5 minutes to remove/install the hoe with the cab in place but really isn't much difference that I can see.
Deciding whether to go with a cab unit or open station was a tough decision back in 2005. I ultimately decided to go for the cab because I was tired of the dust when working the tractors. After 10 years I can say it was a good choice for me. If I were to buy another compact tlb today I would get the cab again, for instance a Kubota
M59 would need the after market cab just as the Deere 110 did. Open station or cab is a personal choice everyone can make for themselves but I don't see any complications with a cab being the issue.
The 110 is a 33hp pto tractor, implements need to fit this rating just like any other tractor it is what it is. Worked well enough with my MX6 brush mower, worked okay with the 673 tiller but was a load at times. Not having cruise was a bigger deal when tilling imo.
When I started getting busy I decided to get a second cabbed tractor that could share the implements I had. Bought the 4520 with 60 hp without the fel and rerouted all the hydraulics to the rear for 3 sets. Added topntilt to this tractor after seeing how well this worked on the 110 and steel weights. Also added the upgraded cruise which made tilling easier to do. I found that most jobs where I would be working for a week or so that having one tractor for the 3pt work and the other for the backhoe/loader work was simply more convenient for the small custom jobs.
All of that said, the point is a 110 will do a lot of work and is a good choice in its hp size just like a Kubota
L45. If you need a larger tlb in a similar configuration a step up to the Kubota
M59 is a good choice. I can tell you from my experience that the backhoe is big enough for my work but at times I could use a 120hp tractor to speed up the laser grading and field work. Very difficult if not impossible to do it all with one machine, but for most personal use I would choose a tlb for the best combination of uses if I only had one.