I'd go with an entry level mbs or GI. I've been riding my core 90 for years and it still works great!
Kiteboarding Team Rider
http://www.cleanlinesurf.com/
Looking For:
cheap old c kites in good shape
What I Fly:
Flysurfer Speed 3 19m, Switch Legacy2 12 and 9m, Radsail Sport 5m, HQ Beamer 1.8m
What I Ride:
mbs core 90, Cabrinha Rival 145, Cabrinha Ace 133
Go big or go home!
1920 Club
https://www.youtube.com/user/rydmiester
Established 1992, Flying multi-lines since 2001