I just coated mine in resin and let them cure, bedded them, then did 2 layers of 1708 for tabbing and one layer of 1708 to cap them. I think as long as you are fully encapsulating, you're good. I think the CSM is overkill here. I also only get evenings and weekends to work on my project, so I understand. I like doing as much wet-on-wet as possible. If you don't have the time to do a full stringer in one evening, only bed the area where you are going to lay tabbing, then you can pick up where you left off the next day. Sanding fillets sucks. Knocking the hairs down on a flat area of 1708 so you can pick up where you left off is pretty quick and easy.