i basically have done your idea for 6 months except no caddy just funnel and pour jugs in lol it becomes a pain in the *** let me tell you lol. I feel like the Guinea pig over this but if it works hopefully it can help some people out it has made my life easier than carrying jugs lol

 

I would do the jug method then lol as much as it sucks...I live 16 miles from e85 9 months out of the year when im in school but i graduate in a year and will permanently be about 50 miles away so something had to change lol this may not work i have no idea but its worth a shot!

 

Nat bad for a setup behind your house, i am with you on the scare if metal drums and combustable materials in heat

 

My buddy makes trailer hitches for EVO so you could just pull a small trailer with 4 55gal drums and be set for awhile.