To stop hair lose , or at least prevent it, you should be taking Propecia during any cycle that incorporates gear that has a tendency to convert into DHT. Propecia blocks the effects of DHT and prevent you from losing your hair. It may also have some adverse effects on your sex drive, but I think less than 2% of the subjects that first were adminstered Propecia during it's clinical testing phase reported those side-effects.
Propecia is a prescription drug, but if you search around on the web, there are tons of places that will mail it directly to your house.
Your right on track now, I just finished a cycle of 500sos and 200deca per week (wish i had eq). Be patient with the sos is takes longer than you think to kick in, but when it does it rocks!