Honesty I appreciate, but ignorance and lack of scope disturb me . There is little more damaging you could do to your car than change the color in the manner you suggest. By doing such your otherwise 'o.k' car will be viewed as a 'hack job' and you as a 'hacker'. If that is 'o.k' with you then by all means continue.
On a personal note it's funny to me. Here I can't get a fender or fuel door painted correctly (e.g. no orange peel, overspray, dirt in paint, clearcoat integrity or chipipng...) for less than an arm and a leg ($$$$) and a large population consistently believe they can paint their entire car for peanuts. Even more extreme some people think they can change a car's color.
On the greater aim:
Troy, I strongly encourage you to utilize the search function. From typing in 'upgrade' a host of threads appeared with this one<-------link standing out at a brief glance.
Personally, I would embrace the gold exterior, pick up a set of reasonably priced rims (from an IS300 on CL for around $300) and go from there. Read the thread ^^^^^^^^^^ above.
Hth.
Thanks a lot, I will seriously reconsider the paint job.
-Troy