I'd say "the usual" PPF areas (and the windshield), will suffice (all the front, the lower rockers, mirrors, A-pillars and at least the first 6-8" of the hood, although I now usually do ALL the front hood and its sides on my vehicles). I only PPF'd my entire Emira, since I see it as my "keeper car". The vents with their fins along the sides and the rear, add to the cost when doing a total wrap, as do the other various "hills and valleys" elsewhere on the body, plus the side logos and rear lettering, when doing a total wrap. So you're definitely paying more for a total wrap.
And I can confirm the comments of
Tracked Emira: I also had some "track debris" (rocks?) thrown up on my windshield, while jockeying for a passing lane on the track. Aside from that, I expected the ++ brake dust clean job but was surprised at the MANY black streaks on the (mostly) sides of my Emira, which I assume were caused by the tire rubber pieces flying everywhere on the track. I've been waiting for GRP to come out with mudflaps and hopefully that will reduce those streaks, since they were fun to clean off of the PPF. I suspect most came from my front tires, when going into a hard corner at speed. Greg has been telling me for many months he'll be selling mud flaps (aka: splash guards) for the Emira but if he takes much longer, I may pull the trigger on the AP (Automotive Passion) mud flaps.