These tournaments should be easy to have a nice ITM% and a decent ROI.

If it's a regular structure I would advise you to be patient early, take control of the bubble nits, and try and build a stack coming into the final table. Cashing probably won't do anything to affect your roll but taking one down (or a top 3 finish) could help you play bigger buyin tournaments. Therefore I'd ride the variance wave and try to build a big stack.