Biglaw is likely out regardless at this point for a few years. Sure, you can reapply to OCI 3L, but most firms don't interview 3Ls.
Midlaw may pay better, but from my experience, going to government for a few years will get you into Biglaw more easily than from Mid-law.
In the end, do what makes you happy as you can't predict where you will be in 5 years.
I am curius to know, why do most firm not inerview 3Ls?