Other than after the pandemic when sales started up last summer, most often the incentives don't get better. The only thing that can happen is that sometimes the incentives at a higher level than you were considering may be a tad better and so you up what you buy.
We did that when we bought RIV. Going from 130 to 175 got us a better price per point and because my DD was a CM at that time, we got an additional $250 off for her discount than what we would have gotten for the 130.