Hi Kai, great speakers for practice. 10″ is not too ridiculous for the bedroom (or garage in your case) and plenty for house parties and such. So, yeah. Go ahead and use them by all means.
Getting a small PA mixer is a good plan, get one with balanced out so you can hook up your EONs without problem. It will also give you a good mic channel should you need it.
I am personally a fan of the new (3rd generation) MG-series by Yamaha (the MG06 is really compact). Also the small Mackies are nice. There are more, but those are my favorites. Also have a look at the new small USB mixer series from Yamaha. There is a report from the Frankfurt show over at the blog.
If you need speakers for in the house and not too loud, the KRK5s would even suffice or even the new 4″s. They will lack a bit in low end, but that is not a real big issue at lower levels. 8″s would be too big for my taste unless you have a medium to large listening space. I have 5″s currently, but would buy 6″s next time for a bit more bass response. But I don’t have kids to worry about. Also I will probably upgrade from RPG (Rokit) to VXT. Personal taste however.
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