They post the next day Reserve Schedule at noon the day prior. So if you start reserve tomorrow, you will know what time you have to show up. On the first day of RSV they try to give you a late show, but being junior you get stuck with a 0300 short call on the first day.

Commuting DEN-BOS should be pretty easy and if you were JFK based the DEN-LGA would probably be your best bet.