Create even everything for everyone. Dwarves are ideal for this: they, unlike us in this world, aren't all that horribly envious, their economy model is downright horrendous... you see what I mean. And they can be all kept happy by satisfying their needs, which aren't that big.
Let them go about their jobs as in any normal fort, just make them all equal in terms of worldly posessions. Clothes? Make stuff of even quality - preferrably sort out the very best clothes and sell the rest. Food and drinks? Make whatever you want - they will all eat the same anyway, no difference between nobles and haulers. Accomodations? Dig out equally big and furnished rooms if you're feeling merciful, or build a big dormitory if not. And so on.
In my opinion, everything should be of the best possible quality in such an experiment - you want to keep them as happy as possible, after all. If you don't, then it ain't the real thing. Give every dorf a fully-furnished room, or decorate the dormitory with masterwork and artifact things, for example.
One thing that is off is champions - the lazy asses don't want to work and will be lying about until something hostile shows up, and even then they aren't guaranteed to go and kick its ass. Either keep your military unchampiony, or create one of those complicated trap systems that can capture or kill anything, for example the one employing GCS and cage traps.
Just requires a lot of work from the player.
Oh, and nobles - if everything is good enough, they will be happy anyway. If not, their loss, they will go insane from all this. But it will hardly be the case if you build everyone a room good enough.