Yes, that's very reasonable. Or maybe add Profession (engineer) and take the five ranks from Jump.Climb 5, Concentration 11, Craft (blacksmith) 11, Craft (carpentry) 11, Craft (stonemasonry) 11, Jump 5, Knowledge (architecture & engineering) 12, Knowledge (planes) 11, Listen 11, Profession (architect) 11, Profession (builder) 11, Spot 11, Search 11.
I'd propose dropping Jump altogether (it doesn't really fit their theme), and putting 1 more point each in the Craft skills and Profession skills.