One thing I've found with tabs in acrylic. Unless you are very careful, you can knock a chip out of the good side of the cut when removing those tabs. I use a multi-tool (ultrasonic) to cut those little buggers so they don't ruin the good side.

I would say going deeper per pass may cause more problems than solve. The forces go way up and the odds of getting melted plastic in the kerf go way up.