/cgl/ - Cosplay & EGL

Well, a few anons told me I could go ahead and cosplay Adachi and gave me some tips on how to make it recognizable, but it's going to be my third cosplay, and I want to make sure I do it right.
I'm not sure what color his hair/suit are supposed to be. In the game they're more of a charcoal grey, the anime has more of a black or navy depending on the scene, and his figure is just plain grey. His hair changes from brown to grey to black depending on the source too.
I'm going to take the advice of the other anons and get a small/old tv and replace some bits (glass to plastic, hollow it out) and use it as a bag. That and add the gun, arcana card, caution/police tape and maybe a cabbage (I played the game and never understood the cabbage thing. He mentions it like once)
I currently have a white dress shirt, it's actually fitted to me so it'll look fine. I have a good binder so I won't look like a lazy tumblr crossplayer. I can pick up a plain red tie basically anywhere so I'm not worried about that. Should I buy a suit, or should I try my hand at making one? I've only ever made plain skirts and a vest, they didnt turn out too well. I was going to get a wig from arda (I get my loli wigs from taobao, never bought from arda), I'm sure they'll have a curly-ish wig to match the character.
Should I try to do contouring, or is Adachi babyfaced enough for it to not matter?

Sorry for all the text/questions, like I said, it's my third cosplay and I want to make it a good one.