Welcome aboard! You've certainly chosen an expensive watch- a wrapped gold model. The story is that wrapped gold will hold up better than gold plated. Whether it last 3-5 years or longer, who can say. Some of it depends on how much you wear it. The bezel and the crown on the case will probably do ok, the bracelet is where you'll see wear- if it becomes noticeable just go buy another TT bracelet. This a rep watch so no Intime doesn't use real mother of pearl and the diamonds are faux. The watch may or may not be waterproof- you'll have to find a watchmaker to test it. You can check around on this site under watchmakers or repairs and probably find someone who can do it for you. Adding a Yuki movement, or installing other parts is probably getting ahead of yourself at this point. I would recommend that you find a nice rep DJ in the $200-400 range , preferably in ss and see how it goes first. After you've done a bunch of reading you will have a better feel for the rep watch scene and can plan your next move. These DJs are really pretty decent so I would think that you wouldn't have to go changing out a bunch of parts- enjoy your rep and get a feel for the hobby- good luck