I don't believe you can tow Toyotas except on a trailer. I have an FJ Cruiser that can't be towed wheels down and it's my understanding that none of them can be.
One value of having solar is you won't irritate your neighbors with noise and you can also boondock when you want.
In my opinion, you'll be trading the simplicity of your TC for a big bundle of things to maintain and worry about, not to mention the costs (purchasing, maintenance, gas, etc.). You will also lose value with each year. You will also be much more limited in where you can go.
Simplicity = happiness. If you must go this route, maybe consider a Class B, as all the negatives will be on a smaller scale, hopefully.
