Alright, so I measured up my USB devices, and with the adapters they're currently using, they measure out to about 7.5 amps total. I was planning to get two multi-adapters, though; if I only had one device powered on at a time, would something like this work? (i.e., it says that it's capable of giving out 1A a port, but that it's capable of powering one device at up to 3A):
Again, I'd only have one device active at a time; would that be good to use?