They use to put the lower time pilots into the EMB, but lately they'll put anyone into the RJ. After having flown both I think the RJ is easier to fly, and has considerablly better schedules.

If you get hired take what ever is offered first. Once in class, seniority is determined by last 4 numbers of your SS#. However, current empoyees like yourself are given the highest seniorty regardless of your number -- so you'll probably be number #1 at this point. When the class bids for domiciles, and training schedules you'll get first choice. Additionally, while non-reving you'll travel under your current DOH as a ramper.