First time energy setup advice? (battery+solar)

You should be able to mount a small box and install two 6 volt batteries on the front of the trailer. Two 6 volts shouldn't adversely effect tongue weight. I opted for four 6 volts on my rig by adding a side mount truck box to the front. I predominately boondock and wanted as much battery as possible since I'm still a few years away from adding solar. Don't like running a generator anymore then I have too. Here is my set-up;