Thanks for the assistance!
I'm looking at doing a little of both ideas that have been put out there.
I'll be picking up the 3.8A 5V supply and giving it a shot (I'll report back if there were any problems powering 6 JuiceBoxes... if not enough current, then I'll probably throttle the project back to 5), but I'm also considering trying out putting the diode(s) in-line to drop the voltage a bit.
I know this question is probably an "Electronics 101"-type, but I figure I'd ask all the same:
The 1N4001 diode is rated at 1A and 30A surge.
Since I'll be using a 3.8A supply, would I need to create a "pseudo-diode" by hooking 4 diodes in parallel to each other and putting that package in series with the rest of the JuiceBoxes?
(Basically, it'll have the .6V-.7V drop across all diodes, but the current would be distributed through them below the 1A rating).
Or, is the fact that the diode is rated at 30A surge sufficient to only use one?
I know... at $.59 a piece at RadioShack, I'm thinking of being conservative with the 4 diodes in parallel with each other because, heck, it's cheap.
But, thought I'd ask in case I'm over-engineering that piece of the solution.