Can I mix the FRAMCOLOR 2001 High Lift Series with FRAMCOLOR 2001 INTENSE to reduce the processing time in half and still achieve 4 levels of lift?

Absolutely.

Absolutely. By mixing FRAMCOLOR 2001 USPLUS with FRAMCOLOR 2001 INTENSE
10.66 or 10.62, you can achieve 4 levels of controlled lift in half the processing time.