This and that
Fiream;
Use the "Spring" clips to adjust your ride height. You want about 5mm all around to start with.
The "Stiffer" the shock oil, the MORE responsive the car will feel in the corners. Just keep the front and back within 5wt of each other. You should be Ok with 40-60 wt in the front and 5 wt less in the back, depending on how much overall traction there is.
Im2Lazy;
Does GPM have a Blade type swaybar for the HPI that will fit on the front? I'd like a better FSB for my Super.
I run a similar shock set-up in both of my HPI cars under similar conditions.
Fiream;
Remember, in order of importance: Tires 1st, set-up 2nd.