Wow. I dont know where to begin with this thread.
Its funny that your bro knows its not the best idea to do an oral only cycle, but insists anyways. I think we call that looking for the easy way out around here? Tell you're bro that his side effects will be much less dramatic and his gains much better, as well as much more keepable, if he stops being a pussy and takes the needle. Does he plan on doing only orals his whole life? If not...tell him to take advantage of this first cycle. I've done a few oral only cycles and I'm speaking from experience.
And 6', 190lbs, if hes under 9% or so, definantly isn't skinny. Fk the genetic limit people, 99.999% of everyone on this board juiced too early.
So since everything I said above will likely end up being ignored, heres my suggestion:
Tbol, 1-6wks, 40-50mg/ed.
Dbol and/or anadrol will cause some serious bloat. This means more side effects. Acne, water retention/bloat, high blood pressure. And who wants that fking moon face anyways? I assume since your bro has been leaning out, he doesn't want to put on water weight. So you people just keep suggesting the strong androgens

.
Keep it simple. With tbol youll retain no water (less sides) while putting on lean muscle. Most all orals become ineffective after the 6th week, or earlier, and can really trash your lipid profile. Im strongly against multiple orals being taken at once and i, among the majority of vets here, who have years and years of experience and have spectated thousands of other users experiences as well, will agree that that is bad advice.