I've worked with John Marien at NorthEast Aerodynamics on a couple laser cut custom jobs and he has been great.

His website is: http://ne-aero.com/

The trouble you may have with cutting from plans, is that the plans will have to be transferred to an electronic format that the laser can use to cut the kit. In many cases, this can get quite expensive. John redrew a set of my hand drawn plans for what I felt was very economical. Contact him and he should be able to get you an estimate at the time involved, if I remember correctly it was about $35/hr at the time.