Hi
I reckon that will work well. I have just changed to a new battery, think mine is 110ah too.
I only run the Waeco Coolmatic CR50-E compressor fridge, and the Propex.
I have a fairly large inverter, but hardly use it now, I have 12v adapters for the laptop and phone chargers.
In the sun I found it was about 56+W from the solar panel when I was parked in town, the panel was flat not tilted.
The panel will pretty much run the fridge on it's own as long, and you can configure the fridges electronics to run just from solar.
I just have the solar panel topping the leisure battery, and the t max split charge system auto switches and links both batteries together when the panel has a good input, above 13.8 or so, so treats it as if the engine is running with a alternator output. This way, I can run the radio and it'll top up the starter battery from the solar panel
It's 4 amps or thereabouts at 56w, so the fridge runs fine, will power still going to the battery's as well as running the fridge.
I've not been away proper to test it over a few days break, but I don't think I will have a problem
The fridge will stop when the battery is low, and I can manually link the battery's together for starting should the main battery be flat, or just to run the fridge if the leisure battery went flat.
I have a pair of heavy duty Trojan units which I was going to use, this would give me a ultra deep cycle bank rated at 210aH, will probably sell them now.
Are you going to run the 100-120w solar panel on a roof rack? I have fitted the biggest I could find on the westy roof rack, would have liked a larger unit, but couldn't have hidden it on the rack.
Are you going to have it fixed or tiltable?
I still need to really test it, unfortunatly, where I park it under the house, no sun, and the front of the house is in the shade unless I leave it in the road!
Good luck with yours!
Cheers
Alistair