Think I might start clamping, clampers advice please

[RiDICKulous]

I've been PEing now for 7 months (mainly just jelqing) and want to get into clamping. I've gotten small length gains recently from jelqing but no girth gains in like 5 months and I think it's time to step it up. My question is what should my split be? I was thinking of being very conservative, something like 3xweek starting out at 3x3 minutes and adding a minute every week with a long 20 min warm up. Maybe 5 min of light jelqing before. Another question I have is the erection level on which to clamp. Should I clamp on when semi hard then masturbate to full erection? Clamping at a lower erection level def seems much safer. I was also thinking maybe I shouldn't clamp at all though and maybe just try some more advanced manual exercises like Ulis.
What do you guys think?

[Steve23]

Clamping Guide | PEGym
Read through this if you haven't already, it's the best information for people to start clamping.