If your bottoming the front on braking, setting sag with your current setup (spring/oil/valving) isn't going to do much for you, as you will still bottom out the front on braking.

Have you gone through the front end to check the fluid, check the spring weight, compared to your body/bike weight? What about valving? Could be reduced to slow the oil movement to keep the bike up while braking.

RaceTech has some good products, as does other companies that provide inserts (Traxxon, Ohlins, etc..)

However, with proper springs/oil you should be able to tune the suspension and not need to go with expensive upgrades.

For sag, you want to measure both static (just the bike under it's own weight) and rider sag (rider/gear). If my memory isn't all the way shot, I useally set my rider sag at around 25-35mm (front and rear). Don't recall what I set my static sag at without digging into my notes.