I agree that we tend to make fly fishing more complicated that it needs to be. Spey casting, even more so. If we just remember how it was with us when we first picked up that long, heavy spey rod.......
Rio made spey casting much simpler when they came out with that fat WindCutter spey line. Even the complete WindCutter without the sections cast great when you add a loop and put a type 6 sink tip. (Which you can purchase separately, I might add.)

If you can cast a friends spey rod with the set up he/she is using you can have something to compare yours with. Otherwise, get a windCutter, types 6 and 3 Rio sink tips, and go for it.

Oh yeah, you might want to rent a couple of spey casting videos.

Don