20 mgs dbol only for 4 weeks, 10 weeks on test is long enough imho.
THIS. at his size for a first cycle this should be plenty and since he has a fantastic base and strength already he will think he is on cloud 9. 10 weeks is all he needs, the cyp esthers will give him 12 weeks total.
he can up the dbol to 30mg if he deems necessary and then drop it back down to 20mg if the sides become too much. he can play it by ear.
i would also recommend running HCG starting week 4 to keep the nuts plump and make for an easier landing