Ok bro I am not an expert by any means, But I can tell you this, alot of people including a well known writer for steroids that I know will tell you more is not better.
You did 750mg of
sust your last cycle, so now you want to up it to 1250!
Keeping the
sust at say 500mg a week and adding another compund to your cycle like
deca at 400-500mg a week will give you decent results, and if your so struck on it you can add the d-bol for a kick start, but other would be best to advise you on the d-bol. even if you dont use the d-bol you still 1000mg of gear with 2 compunds at 500mg a week. run it for 12 weeks and you'll be good. you could even go for
EQ because it makes you more hungry.
Anyway you say you want to be huge!! Just remember to be sensible with what your doing to your body bro, because if you ruin it you wont be getting big. and also be nice to your natural
test champ your still only 23, so take it easy on your boys.
Hope this helped.
Good luck.
B