MJS15627 wrote:Did I just make a crucial mistake?
That's really for you to determine. If you apped for these cards for whatever you consider to be valid reasons and you can responsibly manage 8 cards then I don't see a crucial mistake.
MJS15627 wrote:Approx. how bad did I just hurt my ST FICO score?
We really can't tell you. Your utilization improved but you'll take a hit to AAoA and inquiries.
MJS15627 wrote:Should I cancel any of my CC's?
Also your call. Immediate impact is to utilization. You can calculate potential impact to utilization. you know best which cards are useful to you and which are not. You know your preferences and goals better than we do.
MJS15627 wrote:Leave them sit indefinitely with 0 balances (Cap 1, Dicks, and Guitar Center)?
Check with your creditors for minimum account activity requirements before you decide to leave them indefinitely active. Definitely monitor those cards for potential fraud.
MJS15627 wrote:Will my new cards I just got be canceled because I applied for 3 at once?
Probably not but, again, we can't guarantee anything either way. Adding X cards doesn't affect everyone in the same way.