I quickly looked over your routes and must say that you are doing quite reasonable things already.Since those 60ish routes are nearer to home, I would serve them first, because you must fly a regional aircraft as often you can per day. They are loosers on long,thin routes.
Noone can say how contested routes will work, because you don´t know, what fare your competition offers. If there are already two others, chances are, that they are lower because of competition, a single operator maybe turned that fare screw up, because of monopoly. There your chances are better. It also depends to what extent you oversupply that route with your flights. First divide all demand per all offered/to be offered flights, there you have the equal part you can expect (later,when RI/CI rise and get equal to competitor). Contesting with smaller planes than competitor gives you an advantage in general, because you need much less customers to fill your bird.You will have to care for those routes a lot (that means, work with fares) to get as much passengers for optimal fare.
In general I would have picked another airplane to start a regional airline with short hops - turboprops. Much less fuel for nearly the same flight time and often shorter turn-arounds make them the winner for your business model.For that reason E-Jets and CRJ´s often loose against them.