Would it be dangerous to run 12psi of boost with my stock sequential twins even if I have the stock cat converter?

My mods are: 3" Downpipe, 3" Catback, Apexi Twin Intakes. Still have stock IC and wastegate is NOT ported as of yet.

I kept the stock cat because I was worried about boost creep without a ported wastegate, so Im wondering if its an issue since I have the stock cat and shouldnt be getting much boost creep?

Thanks for any answers or constructive criticism.