Costs to lock in Current Sets + Heatcheck

I’m 4 pink diamonds away from the opal teir and i want moses malone and to be in a place to buy the opal that comes next season is it worth Locking in for the 1600 tokens i think it is or is there a better cost efficient way to grind tokens cause tt offline sucks ever since they got rid of 5 tokens in the vault

Too much MT to lock for Opal Malone a lot of us on the Opal board from grinding TTO