idk personally if i was to say screw it and take slin i would want the spike post workout because thereticly insulin spikes shut of igf production witch is the reason we take growth in the first place the use of slin preworkout would #1 cause igf to gravitate towards the stomach causing intestional growth and #2 cause a decrese in igf production.
the reason i say theroeticly is our knowladge of igf is all theoretical and verry little true facts are known about it. 1kg a week is a shitload espicially off anabolics. im not saying your protocol is wrong im saying personally i wouldent use it preworkout instead i would use the peptide igf1 des and save your insulin spike until post workout to force nutrients into your muscle as its trying to rebuild. im not saying what your doing is useless im saying it hurts the effectiveness of your gh.