He would have been better off spending the money to buy the C64x case and keyboard molds from Barry Altman's estate and then hiring Jeri to do a production run of the C64-DTV motherboard, which had solder pads for all the important C64 ports on it. No engineering required, just business.
And in seconds you just came up with a possible working business plan that this guy had not even bothered to think of even one, much less research costs.
I've seen this alot on Kickstarter. Awesome idea, overflowing enthusiasm for project, no clue where to start much less the skills, Give me money!