hi bro welcome to the forum
I agree with cc , save the dbol for your next cycle, 500mg of test e is plenty , 2 x injections a week @ 250mg per injection for 10 - 12 weeks, train hard , increase your protein and eat like a pig and you will get good gains anywhere between 10 - 20 lbs . Do a good PCT afterwards and youll be very impressed with the results .
As for the age , i cant be a hypocrite , i first took a cycle of dbol when i was 18 but i had no idea how much to take and for how long , at least your here asking for advice and knowledge .
You wanna take a pic of you now and stick it on here then take on in 12 weeks time and you will really see the difference , could even do a cycle journal here aswell !
Robbie