If you are secondary, you may not need any testosterone at all, just HCG.
5grams of gel often is not enough
100mg/week test often is not enough.
Transdermals cause increase in DHT, if that is what you need, fine, if you end up with sky high DHT do not use anything to lower it, just change to injections.
Test DHT, do not get talked into not testing it.
Go by blood test results.