I'd say Republic.. but they have to hire you first. You may be putting there buggy ahead of the horse hear. A lot of variable have to align before you would be based in PIT as an FO for Republic.

I live in PIT and during my interview I stated that I did.. I got the S5 certificate. Only by chance was I offered a Republic class date because someone dropped out of it.

Put your info in both places.. which ever one gives you PIT.. chose that one.. if both do.. choose Republic.

On a side note, where you instruction now.. BVI, BTP, AGC?