Your 100% right you must leave car overnight and as hot as you can in garage up north I mean. HA HA its it's -11c right now in OTTAWA CANADA You can see the full hood that was done on my car on You Tube all the video are posted there and more to come.
Bulk is when we do body panels and don't use the plotter to cut the film we do it custom and leave a 1/2 inch over lap to wrap the edges and if you plan on keeping the car it doesn't show any marks on the car and you don't ever have to wax the car just wash and run enjoy driving your ride while...
What we have been doing in many mustang's for Ford dealers 15 and 16 is kicker sub and amp it's the VSS series SMUS05 and add 4 channel KX400'4 and 4 KS6.5 Speakers that will wake up the sound.
If you look for a Kicker Dealer they can get you the GT 5.0 sub that is in the right back corner i sell them the ford dealers or better yet JL audio has one that goes in the spare tire wheel all you do is remove the air compressor.
Suntek ppf-c make sure they use the good stuff like XPEL there are two quality's films the Suntek will give you a more natural finish and when you wax it it gets even better Xpel is also good not the same in the natural light.