ERJ is a name not a classification. They are both regional jets (RJs). As you said, E-170. They are known as "E-Jets". The ERJ-145/140/135 is known as the ERJ.
Embraer E-Jets - Wikipedia, the free encyclopedia
Embraer ERJ 145 family - Wikipedia, the free encyclopedia

As of yet there is no declaration of who the flying will be for. Until it's made official any guess is as good as another. I never said the flying would be for Hawaiian Airlines. I said RAH would be flying for a Hawaiian codeshare, meaning an airline based in Hawaii. I use that term because as mentioned before there have been no notifications of who it would be. All that was stated was that the flying would be for a new codeshare. That would eliminate Frontier, American, Delta, CAL, MidEx, United, and US Air. We don't know who it will be for but the flying will be for a Hawaiian airline most likely. Anything can change though and this deal could fall through tomorrow. I'm not doubting that what you've said is possible but since nothing has been made official I wouldn't be so bold as to say what name will be on the side of the jet. I still find it hard to believe that someone flying as an express carrier for Go! airlines is wanting to hire us.