Codfunnyhill :
thank you also at the bottom of partpicker it says MSI 970A-G43 ATX AM3+ Motherboard has an onboard USB 3.0 header, but the Cooler Master Elite 350 ATX Mid Tower Case w/500W Power Supply does not have front panel USB 3.0 ports.
will I need to worry about that
You'll be fine. All that means is that your motherboard supports USB 3.0 but your case won't have any. It won't impact performance. You'll still have 3.0 ports on the back of the case that go straight into the motherboard.
The second build isn't better and should only be considered if the first is out of your price range.