Mun- You should definitely develop your shoulders well too it helps a ton with any incline exercise, maybe do military and incline on the same day. I think you should try with light weight doing incline barbell presses at 30 degrees and once you become more comfortable with that slowly increase the angle to 45 occasionally, although don't stick to 45 because like you mentioned in the blog it starts to become more of a shoulder thing than upper chest, 30 is best for upper chest. Personally, I feel it a little different between dumbell incline presses and barbell presses, it could be beneficial to alternate between barbells and dumbells either between months or between weeks. But keep in mind that doing presses with dumbells uses a lot more stabilizer muscles, just like on a flat or decline bench. Lastly, I personally don't do flys much, but you can put an incline bench between cables (make sure the cables aren't at the top) and do some that way. Hope that helps.