well,
youve got about 2 weeks left before your sust kicks in, and you would be overlapping the sustanon by 2 weeks also.
imho, i dont think it would hurt, but its your call. you will really only get 2 real decent weeks out of the dbol, as when the sust kicks in you might not see too much from the d in the last 2 weeks you are using it. still, i think it would be worthwhile if youre an impatient sort who wants results asap, and cant wait for the sustanon to kick in.

peace bb79