You can power the Stoker from a 12 v portable unit. Costco has one right now for 60 bucks or so, with a light, jumper cables and inflator. But you need the 12v adaptor that John (Rock at Stoker) sells.
No you don't need to pay the 126 if you are not vending.
Miht re think the trailer, last year we got rain, hail, and sunshine. But your choice.
Fire putter outer, same as most but last year I am not sure I was asked?? I got one from Quiggs last year.