6-8 week change, is this enough?

[HOLLYWOOD]

ok for example
my chest workout is as follows

incline bench
db incline press
flat bench
incline hammer strength

I'm beefin up the upper chest, but anyways my question is would alternating these exercises say instead of doing bar incline first, switch to db press first would this be enough of a shock after about 6-8 weeks of the above program???