Thought I would jump in here to clarify a few things, (since I know so much

)
IIRC the 7200+ weight rating for the 110 is with a box blade on the rear.
With the backhoe configuration the weight is was listed as 7600.
Other add on such as heavy duty buckets and hydraulic options will add more weight to the base weight.
Removing the standard rops and installing the Laurin cab with ac adds about 500 to 600 lbs is my GUESS.
Without the front bucket, no box blade or backhoe the base 110 weighs roughly 5500 lbs.
I was confused about this 10 years ago and had to do some fact checking before I bought mine.
While the 110tlb is industrial yellow it was marketed through the green dealers not the industrial dealers. The green dealers are the ones to contact for parts/repair and support.
Having both a 4520 cab (2009) and a 110tlb with Laurin cab (2005) I can also verify that the telescopic hitch arms on a 4520 can be used on a 110tlb. That makes hooking up a heavy box blade a lot easier to do. The topntilt kit for a 110tlb and a 4520 is also the same, the upgraded stabilizers might be slightly different but is an easy retrofit.
The backhoe quick coupler is easy to install just unpin the pin on bucket and pin on the adaptor. Then you have to have the quick coupler buckets which are not cheap either.
If you plan on using the backhoe on a 110 don't fill the rear tires, not needed or recommended by Deere. You can fill the tires or add weights if the use is fel and 3ph use only. For loader use Deere recommends a 1200lb rear weight on the 3ph in lieu of the backhoe. The 84" 1260 lb. box blade (Gannon/Frontier) meets this requirement.
Just a suggestion but if you are working on job sites as I do plan on the 110 with buckets, forks and what not weighing in around 9000+ lbs. You need a trailer with a 10k payload to cover most scenarios.