One of my all time favorite fish. The Swales version is much more colorful and the one I have myself. But the standard Swissguard is awesome too. That price is way too high though IMO, I'd politely ask for a discount on it, maybe offer cash to incentivize that for them. Or not, if price is not a consideration.
So to the other questions: Yes, should do fine in your tank and with those tank mates, they are docile fish and somewhat secretive. They tend to stay in the rock work mostly weaving throughout the nooks and crannies. You will primarily see them at feeding time. They are quite adaptable and the lighting should not be an issue. They take to frozen mysis, brine, and flake, pellet quickly. One of the best reef fish for the hobby!