I agree with this list. I like Fulcrum wheels a lot, they're great value for money. I've been using the Fulcrum Racing Quattros for around 20,000km now and love them. They do a disc version now (
http://www.chainreactioncycles.com/c.../rp-prod166434).
Power meter is nice to have if you're serious about training. Either way I would have cranks on the list as the Gossamers are pretty heavy. I'd get a 4iiii 105 crank to match the rest of your drivetrain - I love mine and they're good value. Chain rings for the 5800 series are expensive though.