All depends on what look your trying to establish with the car. Mild, Wild or Crazy look. I would say by the looks of things with your current mods your going for a Wild set up and theres nothing wrong with that but it would look best to keep any new mods in the same category, imo. The wing you have pictured should look good with what you have. One of the other questions I ask myself is will I like this mod in a few years from now. MoWhat I've done the past few years to eliminate future headaches before I buy a mod I look at it hundreds of times over the coarse of a year or two and if I still like it then I buy it. In the end it all boils down to what you like not what we like.
That first spoiler has always reminded me of a little cape. I know I'm weird. Everytime I see a car with it, I play in my head (old batman theme) nanna nanna nanna nanna rice burner! Like others have said, get new wheels first.
Well Hutch, as others have said, it depends on what look you're going for (mild, wild, etc...). I would get one to match the rest of the car. If you don't have any other body mods then you may want a more modest wing(unless you're planning on racing). I personally wouldn't want something like that on my spyder but that's my own opinion. Hope that helps and good luck with whatever choice you make!