As I mentioned the last time this thread popped up, your real "sticking point" for raw benching is lower than where the bar actually stops. Unless your form is horrible, staying tight in the bottom will store enough energy to get you at least an inch or so off your chest, and then the momentum from the bar should take you close enough to the two board position before you finally stall out.
Your sticking point is probably right off the bench, or maybe a 1 board at most - which is normal. I wouldn't really think board work was necessary (other than for variety) for raw benchers unless you are failing at around a 4-board. I'd stick to just bench pressing more than focusing on a sticking point which probably isn't actually a sticking point but rather the normal spot where a raw bench fails on a balanced individual.
Everyone's different, but for me, I need at least some rep work to push my flat bench up. Right now it seems like your volume is really low if you are pressing heavy on monday and then cutting volume from an already low volume day for your second bench session.