My wife had an Arctic Hawk and it was a nice boat, but it has some drawbacks. First, it desparately needs a skeg. Since you're building it yourself you can probably manage this. Hers was a production boat and I didn't have the guts to cut a hole in it for fear it would never be right again.
Also the front hatch is a small round hatch, the same as day hatches on most boats. This made packing a challenge for her and on camping trips I carried some of her gear more often than not. Again building your own, this might be something you can tweak.
My last gripe issue with it was the lack of recessed deck fittings. I took a particluarly good thrashing one day in the surf and a deck fitting took a hunk out of my greenland paddle. I guess the raised fittings are a fact of life with a lot of wood boats, but I try to avoid boats with them now.
She eventually sold the Artic Hawk and bought a P&H Bahiya which is a simiar style boat that overcame some of the Hawk's challenges.
All that said it was a beautiful boat. It's fast, a great surfer and an excellent roller.