The Lahui Kai boards are great flat water and ocean tourers. Really nice glide and super stable.
If you plan to spend most of your time on flat water it is really nice to have the extra length and glide from a touring or race board.
All-rounders are great but it is like riding a Mountain bike on the road, nothing really beats a Road bike for road riding, and nothing beats a race or touring board on flat water.
Triple Carbon and very reasonably priced from $1999
There is a new 14' x 26" race but it is a bit tippier and aimed more at the recreational Racer.
Both lengths in 27" width are very stable for all weights up to 100kg
There also the new 11'6 x 29"tourer if you want something more compact and super stable.