Not that it matters guys but you won't be taking a small donk like this up to 12000 feet unless you are a VFR pilot stuck in cloud trying to get on top in an abnormal situation or a meat bomber with oxygen supplies. (who would usually be using something with a snail on it anyway)
I don't want to clean up a VFR 172 on the way down who is playing test pilot for the day in class E/G airspace.
Stick to your 2000-8000 feet charts and you won't get into trouble