Match order isn't as important as giving fans a breather. So they may cluster the two title matches together along with UT/HBK, but going by the itinerary Matt Young posted, they'll be at Bret/Vince by 8:30PM. They'll have lots of video packages, diva crap filler, trot out the hall of fame folks, and possibly a Santino sketch just to keep the crowd from getting burnt out.
Something Ring of Honor never learned to do.
Let's think through this:
intro videos, legal screens, announcers intro, star spangled banner: 8:00-8:08
CM Punk/Rey Mysterio intros: 8:08-8:11
Match: 8:11-8:23
match highlights and short video package on Legacy feud: 8:23-8:26
Match 2 intros: 8:26-8:30
Match 2: 8:30-8:39
match highlights, some filler like showing the NXT guys sitting in the crowd: 8:39-8:40
some video package (HBK/UT? wrestlemania highlights from previous years? MITB?) 8:40-8:44
MITB intros: 8:44-8:51
MITB match 8:51-9:07
match highlights: 9:07-9:09
Video package on Show/Miz 9:09-9:11
Match 4 intros: 9:12-9:14
Match 4: 9:14-9:21
Match 4 outro: 9:21-9:22
Bret/Vince video package: 9:23-9:28
...and you got 2 minutes wiggle room, man. give me a job booking your show!
(put everything back an hour, obviously I had the wrong start time of 8PM).