You need a boss adapter to convert from the 4 bolts used to attach the Nardi wheel to the six bolts required by aftermarket wheels and the snap off removable boss.
You can get them from Eliseparts or from Elise-Shop.
Almost everybody uses the same one that is available through eliseparts. It is also the same as the one Lotus provided in their kit. It works, easy to engage, not play once in place.
Not sure about the one you’ve found, but I’ve seen others where there they are a pain to get the wheel on, and once fitted there is play when moving from side to side.
If I didn’t go for the usual one, I’d probably look at a proper motorsport one, instead of the tuner market. Perhaps something from Spa Design.
I want to add a removal wheel but have a bloody air bag
I’d speak to lotus about how to disable the air bag warning light, as it gets expensive if you go down the route of getting the US solution. Sector 111 US quick release