GoPower All in One Inverter/Charger/Transfer Switch

I'm looking at installing a GoPower GP-IC-2000-12 in our Open Range 3110BH. The current converter is almost directly under the kitchen sink, about 15ft (as the wire runs) from the batteries. The cleanest install would be to install the IC-2000 here and interrupt the 50A service from the outside. The problem is the 15ft to the batteries on the front of the trailer.

What would you do? I could get the inverter and transfer switch separately, put the transfer switch next to the existing converter, and run AC wiring up to the front and find a spot to put the inverter. The issue I believe would be finding a spot for the inverter because the pass through storage in the front isn't very big. This feels a bit clunkier to me when I have the other option available.

Thanks!