It all depends on how good you are at putting the vynl on.
I used to do work for a graphic design business and they used a small plastic scraper tool which had a half round side a a slightly sharper but still rounded on the other side, a craft knife and a hot air gun, plus a spray bottle with water mixed with just a little washing up liquid.
To apply the vynl they would cut a piece , remove a small amount of the backing and then spray the area with the solution and the put the vynl on slowly, the sloution allows you to move or remove the vynl until it's right. The hot air gun is for molding the vynl and also if you stretch it, it will go back to it previous size with a bit of heat.
To sum up have a practice before you start and if you don't get on revert to painting them instead.