Mesa counts every bag in the cargo compartment as 30 lbs, even carry ons. So that is 190lbs of pax + carry on + 30 lbs in the back if they check the carry on.
Why, for the love of all that is holy, are some people criticizing doing what it takes (2 minutes to move 3 or 4 bags up front) to get a brother or sister pilot in the jump?