Don't be afraid of homebuilds. Due to the constraints of the LSA, they should have similar flying characteristics. That being said, I know the E-LSA airworthiness requirements are more lax than experimental-amateur build (E-AB). It makes me wonder how much flight testing was done and who did it if he is now seeking instruction. As someone advised earlier, if he is already a pilot, he does not require a CFI, and perhaps the person who flight-tested the aircraft would be better suited for this specific task.
However, I am a little disappointed in the homebuild hate that seems to be prevailing on this thread. Homebuilds have a major advantage over certified aircraft, cost of ownership, that puts airplane ownership within reach to many people who would not be able to afford a certified aircraft. I would be skeptical of an amateur designed plane, but anything from a major kit manufacturer I would have no qualms about flying in after it has finished with its initial flight testing phase (usually 40 hours or so for the E-AB category). Zenair is a major manufacturer.