Looks good that is about what I did with my Suzuki LT250R. I used the yellow and it came out pretty good I think. We are going to try and do my son's Blaster next I believe. It will be black. I am going to show him your pics.
Everyone has given you some great advice. I think you probably need to go and get a feel for some of these quads and see which one feels the best. Anything 400 will work fine especially for the trail. A Raptor 700 is also a great machine. If you are not wanting a totally manual transmission you can look at some other machines also the Wolverine is a good bike for trails and they have an automatic option plus they come in 350 and for 450. Depending on how big of a person you are the 350 is probably fine for everything you would ever want to do. I am around 200lbs and I have a 300 Lakota that I can keep up with most anyone on a trail especially if it is tight and technical.