my slant buildup

Just give Ken at Oregon a call and ask him what he recommends for spring pressures for your cam grind. The stock 318 springs may be on the light side concerning open and closed pressures but you mentioned that you are not building a 6500 rpm slant anyway.
Hopefully the cam you bought has the HP and TQ peaks low enough in the rpm range to match your intended use.
Ya know, when I was scoping out parts for the build up and trying to decide what cam to run, that was almost kinda glossed over so to speak, I did go back and re read my (was supposed to be) parallel thread over on .org, and in it was comments from earlier in the process from Josh skinner and others saying that the springs that I have would be alright.