As Jim mentioned in one of the earlier posts, you are really limiting yourself should you decide that SOLAR is the way you want to go in the future. A 55 watt system will not do much more than keep your fully charged battery(s) at a full charge. Most individuals that purchase SOLAR believe that they get all the power that the mfr says they are good for, all the time the sun is shining. Unfortunately, unless you are sitting there moving your panels so that they are ALWAYS pointing directly at the sun, you are not going to get that much power. That is why you add a SOLAR panel or 2 to compensate for the lack of FULL sunlight.
One of the members Jmooney, has a 100 watt system that has room for expansion. You may want to contact him and ask how he likes his setup. I looked at a picture of your 154BH and it looks like you have plenty of room to mount a panel or 2 on the roof of your TT (100 watt panels not the 55 watt panels).
We have a "
RVing with SOLAR" social group that I keep updating with SOLAR information that may be helpful. Which reminds me, I have a few new items for the community.... ALSO, click on "SEARCH" above enter the word SOLAR, and you will be surprised at all the SOLAR information you will find. If you still want more information read "
HandyBob's" solar blog... pour yourself a COLD ONE first.
Just my thoughts,
Don