They don't have to be young actors-- in fact, I halfway had Rudolph Valentino in mind for Dmitri, even though he'd make a better Felix-- Robert Taylor? a lovely Dmitri also...
I can't help you in so far as reading material about corrupting young innocent men. I'm doing my bit at work,but I don't know if I'm corrupting the innocent so much as adding fuel to the fire! *wink*
And I'm definitely doing the RDPS, even though I think you'd handle it better than I could.