Do you think you can apply 400mg/day (absorb 120mg/day) via just using the gel on your penis?
That seems a little high to me, as I would think (from experience) that you can only get about 1ml-2ml or so of gel on the penis at one time, and usually you're not going to be able to get more than 50mg/ml of 4ad in solution at any one time.
So you apply 2ml, at 50mg/ml, you have 100mg on you penis, and than use the 30% rule for absorption to get you to 30mg per app (60mg per day) on your penis.
Right?
Or are you going to be applying the 4ad to other spots as well (delts, tris, etc...)? Though then you're just basically running a transdermal ph stack.
For what it's worth...I would use the site specific gel that one of the companies came out with (used to be Avant Labs Gel#3) and some 3alpha or 5aa....