I’m sure some of the Westside stuff would prove intriguing, particularly their emphasis on tricep strength and speed work. At this point, however, I think you should do a couple of things. Incorporate lots of heavy weight/high set/low rep bench work, and hit your bench at least twice per week. Stay away from reps to failure, as you want to emphasize recovery and repeated efforts. And add in plenty of heavy row movements and rear delt movements to maintain a good structural balance in your torso.
Sounds like you’re more the long-limbed type, which means bench may always be a challenge (I’m just the opposite, which means the dead is more my personal demon). But after a good 6-8 weeks of the above, start incorporating some of the Westside tricep work–lying dumbbell extensions, close-grip bench lockouts in a power rack, etc.
Oh yeah…and have someone with experience watch your form. The proper arch, set-up, and “line” can earn you at least 20% of your lift, so it’s important to make sure you’re getting it all right.