LBS might have a wheelbuilding service. If not, they could recommend you to one. You could get a 4 cross 36 spoke wheel if you wanted, but as
Atlas Shrugged says, that could be overkill. Only reason I could think of is if you wanted to use a super thin gauge spoke and wanted some stiffness back. On a properly built wheel, spokes break from fatigue at the head and nipple and a thinner butted spoke will flex more in the middle and less at the ends leading to longer life.