How much rake will i get with 2.5/4 drop?

[c10noob]

I recently ordered all required items for a 2.5/4 drop from ECE but am afraid I may have pulled the trigger to soon and I am wondering if I should've gone 5" in the rear?? I don't mind a little bit of rake but would prefer 1" or so at most.

I don't want to notch the frame and do plan on using the bed of the truck for a couple dirtbikes occasionally.

Can anyone post side view pics of the rake on a 2.5/4 as opposed to a 2.5/5 and give me some thoughts on clearance without notching?

Thanks,