My class date at endeavor is for the first week of January. Pending endeavor accepting my 135 sic time (long story) would it be that much more beneficial to start a few months sooner?

I am coming from a 135 operator that operates a single pilot aircraft with 2 pilots at all times (much like cape air). Endeavor is the only regional giving me a hard time about the sic time. I am now a PIC but I would have to stay at my current position a few extra months to make up for the SIC time they won't accept.