If you feel like you need to work on your game then going for 4-6 tables and developing detailed reads is the best thing possible imo. While doing this I wouldn't be afraid to experiment with quirky things when you find reasons to deviate from ABC poker.

Personally, this is how I learned to play (rarely more than 4-5 tables) while playing a very laggy style and I think it prepared me well for tougher games. For the time being, it's less stressful to play a bunch of tables at stakes where I feel very comfortable as a way of keeping my variance at a minimum and maximizing shit like rakeback and bonus/promotions.

Your idea seems good to me. When you get bored, just put each villain in each hand on a range of hands, even when you're not involved in the pot, and see how you do.