I ride the firewire flexflight in a quad. It's one of the fastest boards i've been on. I can't remember the exact dims but its 9'1". I don't get any nose time to speak of but it's really light and maneuverable. On smaller days I stick to the log but anything above waist the board really performs.
Clemson.......Quad is definitely a great setup for an HPLB!! I won't ride anything else! Some great fins for a quad LB are FCS TC Aqualines and some SF's.........Glassy and Sunny.......I've ridden different brand name boards and as I always recommend.......Get a custom from a local shaper so you get exactly what you want out your board. Will be easier on your wallet too.