There's a better solution
I recommend that you stay in the E-175, with that being said, I recommend that you fly one at Skywest. The Q400 is a hot mess in which you work way too hard for way too little money. The E-175 by comparison is very easy to fly and for the most part has a much more pleasant route structure making for a much more pleasant day of flying. The question is, fly the 175 at Horizon when you can fly the same equipment at Skywest where the fleet is actually growing, there is a far superior route structure to operate on, and the basing options are pretty much the same as Horizon and the best part? YOU DON'T HAVE TO WORK AT HORIZON! Don't ruin your career, go to Skywest.