That's the ticket!
And the beauty of this website...This is definitely the "right"' way (going internal with 4:1 or better) to go-I sometimes hold off out of respect for the guys who want to improve things but may not be up for the full monty, and I try and keep most of my comments in line with the desires of the majority (since I seem to get plenty of chances to show my true racing colors anyway) at least until the discussion goes that way..
BTW-Mike-Gorgeous boom! One thing I noticed is that you have the mainsail clew attached directly to the outhaul car..If you recall I have mentioned outhaul cut up as one of the measured dimensions for a mainsail, and I see you have a sewn-in clew ring. From the pic it looks as though the sailmaker designed about .75" of cut up-meaning if you had a shackle connecting the clew ring to the OH car the sail MIGHT fit better. The way to tell is simple: If you have a wrinkle coming out of the clew with the current set up, this is likely the reason. Or, go out one day with a small "D" shackle joining the clew ring to the O/H car, and see if the main looks better. Having said all that, it may be the ring is sewn without providing for this "cut up", but since the ring looks a bit twisted, I am making a guess at this-and it might make the main set up smoother (to go along with the beautiful work you have done already)..
Let me know!
Anyway-good exchange of ideas-all of it is right on!
S