Replying to Need Advice on my 50/50 touring setup

Currently running a faction mana 3 with a marker duke pt 16 as my big mountain, pow, and touring skis. I like the way they ski on the ground but they are heavy in the air and on the uphill. mana is 2070 g per ski, duke is 1380g per binding. I either want to get the shift 2 which are 920g and throw those on the mana 3s, or sell my whole setup and put shift 2s on some lighter skis. Would throwing the shift 2s on and taking away over a pound per ski make a big enough difference? or should I just scrap it all for a ski in the low 1900 gram range and pair it with the shift 2. I’d be looking for a 110-115 free ride style twin tip in 6-7 flex range.