The reserve situation has changed month to month over the last 24 months that I’ve watched it. Barring substantial change (... and that never happens, right) new hires are probably looking at over a year of reserve at all bases. 20-40 hours/month is reasonable to optimistic. I’d say 20 average.
The junior (ie non-clt) bases have moved pretty closely together for reserve times. There’s not a reliably super junior base you can take to get a line quick.
2 leg commutes are badddddddddd.