Doseage advice needed for my next cycle

[grumpee]

I'm currently on week 6 of my third test only cycle and planning my next cycle. Going to order it soon so I thought i would get advice before I order it

stats/info

33 years old

6'3"

248 pounds

15% body fat

I been on TRT for over a year @ 200 mgs per week

first test only cycle I ran 400 mgs a week for 12 weeks and gained 20 pounds

second test only cycle I ran 400 mgs a week half way through and bumped it to 600 mgs because I was not seeing gains/ Gained under 10 pounds.

currently on week 6 of 800 mgs a week of test only and have gained over 10 pounds. Eating like a horse and training like a animal .
My next cycle Iam planning on running

D-bol week 1-6 @ 20 mgs a day
test week 1-12 @ 600 mgs a week
decca week 1-12 @ 400 mgs a week

I already have the adex, nolva and hcg on hand and will be getting caber to have on hand.

My question is with my history and size and being on TRT are therse doseage sufficient to see good mass gains ? Any other advice on this cycle would be helpfull