Ya I think its your best bet. The problem is your chosen vehicle and ways to fit a big alt on it so you can have a smaller amp(s) but then you gotta have alot of storage and you dont even have much room for more batteries either. You got to get as much storage as you can in that little space and juicebox has bigger batts too but dont know if you can fit them in there, look at watermellon on there site. really lithium is the answer to your problem - small lite and dont need alot of amps charging but very expensive. I am going to them. Too bad I cant afford it know I would sell you my batts.