I use the 7% and have from the start. I tried the 3% one time, but it didn't do much for me (not like the 7%, at least). He can always start out with the 3%, and move up if he tolerates it well <img src="i/expressions/face-icon-small-wink.gif" border="0"> . The 3% is pretty cheap- I get 100 vials for about $15.
The order I do mine in is :
Xopenex (refined albuterol-and always before HTS <img src="i/expressions/face-icon-small-wink.gif" border="0"> )
HTS
Vest (if I am in a big hurry, I will do them-HTS and vest- together <img src="i/expressions/face-icon-small-wink.gif" border="0"> )
Pulmozyme
Advair
Tobi or other inhaled antibiotic (but I think I am alone on the Advair before Tobi- I need it first to tolerate the Tobi well)
I only have an occasional bleed, and usually pretty small, so I'm afraid I can't help you with that- sorry!