It looks ok to me.
Yes, I didn't bother to go 50hz on both hi sides to control switching losses, as testing on the first and subsequent units show that they seem to heat virtually as much for the high frequency sinks, regardless of high or low side.... so I never bothered to alter it. If you build it as I did, then you can see for yourself... not much in it.
I do intend to try all sides at high frequency, should give a quieter transformer.
I designed a opto version but did not pursue it as the heating is really not an issue. It is easy to keep cool with low speed fans.
Welcome to the club.... you may find it becomes a sickness... I see a lot of folks are building more than just 1, and some very fine professional looking units are out there now... leaving me for dead really....
You will do some things different, we all do, thats why the pics are important, so folks can get ideas much better than mine... it is evolving a life of it's own out there... eg look at this.... his second one...
http://www.thebackshed.com/forum/forum_posts.asp?TID=8542&PN=1&TPN=11.............oztules