First and maybe it's just me but I think you'd be better off ordering it all from the same place and not multiple sources.
Seems decent, make sure your power supply is adequate (Newegg has a calculator for it) the other thing is do you have anything in your current PC you can keep/use with the new build (HDD, OS, CD drive).
100% IMO but if you have parts you can keep from your current PC then you can take your price down or set more into something else.
Also, when Mr.Liquidfire sees this can we get a Computer Tech section added as a sub-category/forum such as under the PC Gaming section?
It's a tower build only not complete system. but for a good mouse for gaming you'll likely be looking in the $20+ range.