IMO, the base recipe should take a construction/logistic robot anyway, especially if you play with Bob's robots, and that's a change I personally always made with the Fusion Robots mod.
With that mod, I changed the recipe to be 1 construction/logistic robot, 2 green/red circuits, 5 blue circuits, 7 red wire, 7 green wire and 1 portable fusion reactor, and considered it fairly balanced for the benefit of having these robots.
