Hxt1 - Thanks for noticing.
If you are considering a change and would like suggestions about a move to horns, this thread would be an excellent place to seek advice and/or suggestions.
You can also learn a lot by joining this forum:
http://www.audioheritage.org/vbulletin/
and asking questions.
Ultimately, I got enormous help and advice from Bill Woods. He has owned, worked with, tested and built just about everything available in speakers in his professional past. When he reached retirement age, he left the corporate world and started designing and building horn systems. Today he calls himself The Acoustic Horn Company and operates out of a small shop behind his house in Hastings, Ontario. He doesn't sell a lot of his own product directly to the public but his AH!300 horn is used in several of the finest loudspeakers available today. With it you would have the basis for a world class system. Check out his website: http://www.acoustichorn.com/
You can find pictures of many systems, including mine, in the Testimonials section.
On Audio Circle you can find extensive info about Earl Geddes and his speakers. He is very popular with the DIY crowd there.
And post your room and your system here. Perhaps there is a strategy you haven't considered concerning upgrade sequence. It is also possible that some of us might have spare parts we can offer you.
Pete Seeger said that a camel is a horse designed by a committee so I guess you want to keep that in mind as the advice pours in, but you never know what good might come of this gambit. Stick your neck out.