Very excited to see what you end up with, just saw your story earlier and have enjoyed following! I have a similar set up going, for reflective material I've been using one of those Colman emergency blankets you can find in the camping sections of walmart, target, any of those....works really well, I'm also using Dr. Earth Nitro Big, and have 2 26w 6100K bulbs, started LST this week 20/4 light schedule....looks like I may be about a month behind you