You should be a ok.... honestly you could take it all at once and then save a small dose of kpin for when everything else wheres off, or starts to. The HCodone won't lask very long, but the vyvanse will and kpin lasts almost as long as the vyvanse itself.
I used to to the same thing on a very regular basic.... not so much anymore but when I was younger i would take
60-90mg dexamphetamine sulfate (dex spansules)
4-7mg clonazepam (sometimes as high as 15mg which is like the same as 300mg diazepam)
50mg or so of hydrocodones
Sometimes I mixed lyrica or gabapentin in there for an extra gaba boost,
So you should be okay you look like you're going to be a safer than I was about it.
I guess everyones tolerance is different. Just do be safe dont do it daily like me, lol I finally got my friends back that stopped talkin to me for two years.
edit: Yeah I never had a name for it with the stim in the package... but my trifecta i use to refer as the "triple downer combo" (hard booze, benzos, and strong painkillers... haha definitely do jump into that once headfirst, I did and it landed me in a hospital bed.
enough rambing you should be okay.
im slow right now took some ativan with a vyvanse... eating carrots before its too late...
Please dont think I was dicksizing since I was just comparing and sayin that the OP should be okay. take the others advice too I'm not really right in the mind right now...