Well, son, Kirk Kerkorian's obituary was published today -- at one time worth $18 billion and owner of most of the hotel rooms on the Las Vegas strip. He was humble, with an 8th grade education; he had a risky job at beginning of WW II flying airplanes from Canada to Britain. He learned to take risks.
I can see the method in your madness. Obviously, you want to get your money's-worth from those DDR4 sticks. So . . . Criswell here, will make a pronouncement, with no guarantees.
If Intel produced a new chipset for Skylake, slated to use "DDR4" spec memory, why would they exclude any RAM modules from a QVL list which appeared early in the game?
I think your prospects are good. The risks seem much lower than buying a pile of Las Vegas real-estate during the time of Bugsy Siegel.