To my knowledge, the current version of KSP automatically generates parts testing contracts for mod parts.

Since the SDHI SMS is meant to be used as part of a complete CSM stack, it would be nice to:

• Disable individual part testing contracts
• Create a comprehensive contract to build and test a complete CSM stack
• Additional contracts (e.g. suborbital, LKO, Munar transfer orbit)

You could disable the stock test contract for your parts (not sure if you'd do that by omitting ModuleTestSubject or by including it with the appropriate options) and include a contract for Contract Configurator that requires the appropriate numbers of parts to be present on the same craft. I don't think there's a way for Contract Configurator to enforce a particular order on the parts, so users could hypothetically assemble everything in some bizarre way, but they'll probably find the conventional method the easiest. Requiring suborbital, LKO, and Mun/Minmus orbital testing missions in that order is straightforward with CC.

After consulting with @NathanKell, it seems that simply omitting ModuleTestSubject automatically prevents the parts from showing up in part test contracts.

As for custom flight test contracts using Contract Configurator, I'll put this on the back burner for now.

I'm scrapping this entirely.