Holy crap. That's gold alright. Are those diamonds on the dial? Damn.
Anyway, I'm not familiar with these kind of watches. I would never buy one of these. But 35mm is a good size for a man depending also on wristsize. I would not worry about the movement although every movement needs a service after app 5 years. Not sure if this is also the case with co axial movements but you can google this.