ROI from folding all the way to the pushing zone?

I wondered if anyone who multitables uses a style of play like this. Simply folding virtually everything until you reach the levels to start a perfect push/fold strategy?

Or would this pass up too much +EV before you reach the bubble stage to make it work?

Does anyone have experience of what buyins can this might produce a +ROI at, if so I’d appreciate your opinions.

I ask because I’m starting to multitable and considered simplifying my early level play to help me deal with the extra tables.