Stacking peptides

I plan to start the following:

GHK-CU + BPC-157 (50-10 +3ml bac) 6 weeks on 2 off

Epitalon (10 +2ml bac) 10 days on 20 days off

Semax (5 +2ml bac) nasal spray 1 pump everyday until it’s gone see how it does before carrying on.

Can I draw the 12iu ghk-cu/bpc-157 blend then draw the 5iu epitalon using the same needle ?

Semax can you pin that or does that need to be Nasal? If it can be injected subq can I add the 10iu to the same needle ?

Will be using a 1ml 30g 8mm needle

Thanks