*puts on brutally honest hat*
You need to change that artwork. I quite think the opposite of your post in that you SHOULD use animated images versus live action. I really feel you should nix Wonder Woman and maybe go with Spider-Woman, or even Spider-Gwen with Spiderman.
Live action just brings two TOTALLY different styles, where animation you can get away with more as it's mostly lines and colors, both of which you can alter to get at least a SOMEWHAT cohesive mix.
Either that, or put on your big boy pants, and build the Spiderman cabinet you really want, and maybe do a bartop or mini of Wonder Woman for the girls once you gain all the knowledge from your first build. From the speaker grills you have chosen, you are not leaving much to the "Wonder Woman" theme, and it's going to be even worse if Spiderman is the dominant design with 3 pictures of WW thrown in to keep the girls happy. I have a wife and 2 daughters, so I get the pain, but c'mon man. I would be happy to work on some samples if you wish.
And to appease the "if you don't have something nice to say" crowd, I think this build is awesome, and it's your machine that you'll have to look at, but I am saying something early on instead of letting you get all your artwork printed and hating it.
Keep up the good work!