It went ok with 4000 pts.
First game was a bit longer as we still had a lot of stuff to discuss (rules, procedures etc), but it took us from 10:30 to 20:30 on saturday (3 games), and from 12 to 7 pm on sunday (2 games). We are well used to 4000 pts, we used to play WAB 2 in 4200 pts and WAB 1 in 3000 pts. We had 8 players: 2 x EIR, Late Seleucids, Early Spartans, Late Carthaginians, Viking Great Army, Late Anglo-Saxons and Parthians. It went to the Vikings, followed by Romans and Saxons.
It was a good weekend, and we are looking forward to repeating it every 3 months, so we can have 1 tournament every quarter.