My #8 from roof to battery box where the controller goes near there, is about 45 ft one way (you count two ways so that is 90 ft). It took the 130w's 8.2 amps with no loss, so it would also do the 230's or near that where the Vmp is about 8 amps or so with no real loss to an MPPT controller.
With a mid- kitchen instead of a rear kitchen trailer, the OP's distance must be less than ours by at least 10 ft.
Two 120w 12s in series or a single 240w or so, and the $102 (US) Eco W and you are good to go. When you can get a decent MPPT for that, you don't save much by going to PWM on the controller. Be different if you went to the $300 or twice that MPPTs out there, but you don't have to do that. And the Eco-W has the two adjustable voltages for Vabs and Float while the Solar30 has just the one adjustable voltage that is for both.
We do everything with a single 255w panel and the 20a Eco- W. But we have the 255 in a tilted tracker contraption, so it would be like maybe 355 flat depending on location and time of year.
