I currently fly a BE90 Part 91. Right now, I am averaging about 400 hours MTPIC per year. My stats are:

2400 TT
1700 Turbine
1200 MTPIC
260 Jet 121 SIC

If I want to fly for a large aircraft 121 carrier (Major/National/LCC/Cargo), what is the best way to get there from here?

A. Stay where I'm at (400 hours per year...all PIC)
B. DHC-8 Part 91 (300 hours per year...150 PIC/150 SIC)
C. Regional Part 121 (?800? hours per year...all SIC)
D. Something else

Thank you everyone for your input. I am open to all suggestions.