I will be switching to the new harland sharp rockers in a few days and I just wanted to make sure that all of my internal workings will play well together. This is what i'm going to put together:
Harland Sharp 1.7 Rockers (10.4 grams lighter than stock, stock ratio), Comp R Lifters, Comp 918 Springs, Comp hardened 7.4 rods, and the F1 cam 230/226 .591/.569 112.

My major concern is that the reduced weight of the rockers will cause valve float because of the lift of this cam being so near .600 which is the max lift for the 918's.

Let me know if you have tried this or something similar or if you have any suggestions for me. Thanks.

 

Isky , crane duals , comp 921, Ferrea's similar to Isky with Dampener
I will be running the Harland sharp 1.7's with comp 850's not the "R's" with The Ferrea springs.
Just my .02
cam is going to be 224 581 112

 

I would agree with more spring is needed in your case, but adjustable rockers may be another good idea in your case w/ the comp R's.