homie...chill! Calm down. Dun be nervous. Did you and Jill have an out?
Storing gas? As is? Good for 30 days. If you add a good stabilizer to the gas in the tank right after filling it at your local petrol station, then the gas will maintain it's properties much much longer. I have Seafoam, Sta-bil and another type: Starbrite (an enzyme product). Buy these at Wally World, Target, auto store, etc. I buy several cans of Seafoam when it's on sale. I Use it in my truck too.
As far as how fast it pours and me pulling me hairs out waiting for it to stop? Nah, not anxious. The weight of a 5 gallon will be a challenge but, I'll manage that too. Simply pour into smaller gas can or empty plastic Tropicana OJ bottles first, then pour? Whatever homie, When there's a will.....blah, blah, blah

It be do-able.
Hey SECoda! Thanks for all of that! I'm sold on the extension pourer now too!
You're the first to buy both the can and ext. spout and spill the very good reviews.
You Rock!
Too bad we couldn't get a group buy on these. I think we've got a No-Spill Gas winner ~ "POOF THIS!"