About a better power supply, I said before, seeing that you live in Ohio, that you can get an excellent power supply for the microUSB port for the Pi by getting a Motorola cellphone charger from Amazon with free shipping and no minimum, the last I checked. There is just one listed on the Verified Peripherals page, and that is the one I got and I am quite happy with it.
Deciding on a super good hub that is not expensive is not easy, I am struggling with the same question. A lot of people give rave reviews for the Plugable 7 Port hub that has a 2.5-3 amp supply, that would probably meet all your needs. I do not know about buying better AC adapter for your hub, and the Plugable is not cheap, about $20, but you can be sure that it will perform well.
I mentioned running the "lsusb -v" command. Do you know how to get to the terminal on your Pi to run commands? If you can do that and type those words without the quotes, the output will tell you more than you can begin to want to know about all the USB devices plugged in to your pi at that time.
To get just one screen at a time of the output, because the lsusb -v output is longer than one screen, you would type the following instead, the "less" command waits for you to hit a space before it gives you the next screen:
lsusb -v | less
And then you look at the names of the devices and then for lines saying MaxPwr to see the power the manufacturer says they might need.
EDIT: I see you do not need to power the pi, just peripherals. Was just looking at AC/DC adapters at Amazon for hub and the cheap ones look pretty iffy. Going to call my local electronics store to see if they have something more reliable that does not cost as much as a model A Pi.
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