.

 

I have done this professionally, and the learning curve is steep.

The guys that do this have the vinyl cut on a plotter, to fit the vehicle exactly. They also know exactly how much vinyl is needed. Have a sign shop cut the vinyl for you. (They will also tell you the cost.).

IMO it is unlikely you can do a good job the first time.
You really need a 'clean room' to do it right. Otherwise dust, wind, insects and blowing dirt are a problem. You will waste a fair amount of material learning how to handle and apply the vinyl. You will get air bubbles and dirt trapped between the vinyl and paint. You will get wrinkles and creases.

Even better, have the professionals install it.

 

I wrapped my CRX myself and am not a professional. I used about 60ft of 5' wide roll and redid my roof and hood twice. I actually have a lot left over and ended up wrapping my dish washer and black fridge to make all of my appliances match in my kitchen with the left overs.