Not surprised you struggled with Megs Stage 1 as it is for hand use only and won't really do anything then. Also all the products used are either hand use or not a polish.
Looks good but as someone said go for the Menz Ceramiclear products they are the only thing that will really tackle VAG paint. They also are very oily, like ff, so you get almost zero dusting and you can work the product for much longer.
If the car is too hot then you should leave the polishing until it cools down otherwise the polish dries to quickly and you will end up with problems.
Unclefester if you go for the Menz ceramiclear you won't need Power Gloss it is too agressive IMO and creates a lot of dust. It is good don't get me wrong it's just been superceeded by the ceramiclear.