Question about MDMA and 2C-B supplementation

Sorry for my ignorance on these matters, and thanks in advance for any advice. I'm planning on following the below supplement routine for an upcoming MDMA roll:

Before:

100 mg Co Q-10

800 mg Magnesium Glycinate

1200 mg Vitamin C

400 mg Acetyl L-Carnitine HCL

100 mg Grape Seed extract

200 mg Alpha Lipoic Acid

After:

800 mg Magnesium Glycinate

1200 mg Vitamin C

400 mg Acetyl L-Carnitine HCL

100 mg Grape Seed extract

200 mg Alpha Lipoic Acid

10 mg Melatonin

Next day and daily for the following week:

100 mg HTP

1. Any suggested tweaks?

2. I doubt I'll be able to time my pre-supplement all that precisely - I'll be at a music festival, so I don't want to be carrying around handfuls of pills with me, and I also don't want to drop before I'm in front of a DJ I really love. I'll most likely supplement at camp before leaving for the night, which will probably be 2-4 hours before I drop (rather than the recommended 1 hour). With that in mind, should I switch anything up? Is there anything in my list that's going to be a guaranteed waste if I take it a few hours in advance?

3. I'm planning on doing 2C-B my first night, followed by MDMA (and possibly another bit of 2C-B) the…