I vape quite high mtl on my mech. I don't really have any business being here but some advice is;
If you are brand new to mechs you should start off easy. Forget the faux hybrid and .1s
Seriously little to no room for error with builds like that even on
batteries that can take it while pulsing.
A faux hybrid will increase the chance for error. Perhaps you should get acquainted with comfortably handling the standard mech first. As you learn more you can bring your res down and mess with faux hybrids.
Also, I know I talk about room for error a lot but it is suggested to build at a level which allows for decreased CDR, which will happen over time, or if your batteries are not quite 'right'.
I use 25rs generally and although they are reputable and 20A I would only build at a level which will discharge roundabout half of the tested CDR.
So I use vape-calc which I recommend. For Samsung 25rs I would only rock at .4s pulling 10.5A I believe.
VapeCalc
Use Mooch test reports to see what the CDR is for which batteries and check out the intended build with a freshly charged 4.2 battery on vape-calc and see what Amps you are given.
Don't go higher than the listed CDR on Mooches reports.
Some do later on, but not for now imo.