im ordering a 819 and am wondering what options are must haves here is what i have so far. Proxs 200, 2-helix 10’s, ultrex what length shaft do u guys recommended? Rachet tie downs. Dual console, 4 bank charger, cover. Also comsidering padded deck and integrated wiring harness. Is a channel frame better? Dealer said $200 option but likes the tube frame trailers better he says they are stronger. Anything else i should consider?