This is the kit I use, I only use the mini gun when painting outboard motors. The large gun will waste way to much paint. I now found a local source to mix my paints for me. One thing I learned is not to buy paints from a different country. If you run out of paint you are screwed, now you have to wait another two weeks or so for more paint and the project once again goes on hold.
Touch-up guns are OK, but do not hold a lot of paint. It is also a small spray pattern, you can get that by adjusting a bigger gun as well, you need to practice with water on cardboard to get the feel of a paint gun. Try the Harbor Freight purple gun, google it and its all over youtube, so cheap you can throw away rather than cleaning when you are done.
I heard at AH, that John is no longer selling stickers, his stickers were complete and well made. I used Discontinued decals before and found out I did not get all the decals that came with the motor. John still may have some for sale, but I have not talked to him to confirm yet.