I put on vinyl of my own design 4 years ago and am very happy with it. I even did my wingtips, which are pretty hard to do. I used the best available at the time, which I believe was rated for eight years outdoors. Now there is ten year vinyl. Go to signwarehouse.com and look up Oracal 951. If you specify that, you will love the results. Material cost is about $70 per color, with shipping. I buy from Sign Warehouse, but am not affiliated to them in any way. Good company. I have done a few airplanes.
Bob Kelly