Approved for Firestone card!

I'm excited because this my first non-subprime card. I have a Cap 1 secured ($300 limit) Fingerhut ($1250) and First Premier ($300). My uti is sitting at 40% overall which was a blip... Meaning I didn't PIF this month because we recently moved

Fico scores are Eq 595/TU 593/Ex 584. Needless to say I'm very surprised I was approved. They gave me a CL of $800.