No no. You won't get 100% generally, just nearly to 100% (because of the hepatical first-pass-metabolism).
There was a writing paper about bioavaiability between orals, transdermal and inject versions. The transdermal products depends on the additives (like glycerole, benzyl alcohole and this whole stuff).
The result on the study was, that transdermals weren't that much effective (the aim of the study was to evaluate, if transdermals could be an ideal oppurtunity for men and women with a hormonereplacement (like Testogel)).
I have to search that paper...
My thoughts were to use the whole planned PH's as (inject or) oral version with a strong liver care.