you wont waste it, and GH actually stimulates T synthesis. this will help you through your post cycle therapy (pct). HGH and test do have a very synergistic effect though, may consider running GH long enough to hop back on some test before your finished.
you could always consider some CJC/GHRP too, the results from the peptides come much quicker than they do with GH.
how old are you?