realistically I would say you are looking at three years at least at this point for a n upgrade.... and then if you take the first thing available. You will be offered a specific cert if you are offered a position. CHQ flys the 145 and its variants... RW and S5 both fly ONLY the 170/175. You wont find out which base you will get ( based on senority ) until sometime during sim training....5ish weeks after training starts. 90 minute callout for reserve. Good luck.