Hello again

I have bougth a big bottle of UK 3.0 and smaller Gliss and SIC for our 2 cars. Both of dem will get 2 layers of UK 3.0 and then Gliss on my wifes and SIC on mine, just to see the differences.

Is 12 hours of cure time for the UK 3.0 enough before I can apply the topcoats ?
Is there any differences in the way I apply them ? Ive seen some say the SIC has a lot longer haze time than the Gliss ?