If you're going to be using a 7nm Ha filter the UV/IR is going to be redundant. It will however increase the likelihood of getting internal reflections
And you're using an old clunky camera Lewis, you're going to need 5+ hour subs to get over read noise
In reality 20-30 minutes will be fine. You're using an OSC so getting bogged down in getting the absolute most out of the sensor isn't worth the effort
