Check with Mike first - the backbone of your wax box should be compatible with what he uses.
Hertel race is not the same as Hertel Hot Sauce and they have different compatibility.
I heard back from Mike this morning. He uses Swix CH7. He also said there isn't any concern about compatibility because all the waxes use the same relative molecules and are petroleum based. I have no bias for or against any particular brand (Swix, Dominator, Hertel, etc.) so I guess I'll read a bit more and then pick something to start with.
He also mentioned his SkiMD Pro-glide as something I should consider. I read some posts here about it and it seems like a good supplement to hot waxing.