I hadn't seen that blade before you mentioned it so I had to look it up. I like the idea, and I have like Freud blades in the past so I feel it would preform pretty well.
I have a couple of sets of dado blades, I have found that I can pretty much get the width down to what I want before mounting and it is rare that I find I must play with it after setting. And on a shopsmith, unlike other saws you can just pull the table away and have clear access to the blade, or simply pull the blade and arbor off and do it that way.
I personally like the Infinity Dadonator blades:https://www.infinitytools.com/dadonator ... h-5-8-bore
I'd also think about if a 6" set is going to fit your needs in the future. I have both and I have found that sometimes I have needed the 8" size. If I had only one size I would go with the 8". You will also have to make your own ZCI for the larger/deeper cuts but at least you can make them.