Two quick opinions here...
1. Even though less efficient, those "peel-n-stick" PV panels sure seem like the ticket for the rounded bus tops.
2. LED lighting...great stuff, but in my home I've always kept partial incandescent. Why? Because incandescent lights are dual purpose. They make light *and heat*. Coming into summer might not be the best time to discuss this, but I've had several discussions in the past with some pretty knowledgeable folks.
The point I eventually got across to them was that LED's don't save you squat during times of the year when your heater runs because the heater has to work just that much longer to get to the set thermostat temp'.
In thermodynamics, it's all about heat transfer and management. RV's are a really fun exercise in this. Incandescent lights are really effective heat wasters, but really, aren't there times of the year when you wouldn't mind a couple hundred watts of multi-source heating with the side benefit of mood improving light during the darker times of year (and...at *night*).
An in-the-know RV'er might have a set of LED's that gets swapped in the first time the A/C gets turned on for the year, and a set of incandescents for the first day of furnace