I'm not sure how not knowing that 154 is slightly bigger than 150-152 is not knowing my specs. There is a lot of difference in the control and ride with minimal changes in length. That is why they sell different boards so close in size.
--- 3/4" isn't going to be that drastic (if even noticeable) in a change IF you are truly willing to ride a 152. As for specs, 152 could be your max because of your weight requirement, and or where you plan on riding/what you plan on doing. I have no clue about anything about you, nor did it hurt to "offer" a 154. Quite logical thinking on my part, but as i said... GLWS.