Wagyu X Angus would make a very good cross for high yielding, high marbling, extremely flavorful beef.
There will be a big demand for this cross in the next few years.
You will not be on the ground floor but pretty close to it.
I have a neighbor who is transplanting Wagyu Embryos into Reg. Red Angus.
I don't know why he is using strictly Reg. Red Angus, unless he is planning to AI them to Wagyu's after calving or AI to Red Angus.