My brother does wraps on cars and I've done several myself.
How easy it will be depends on the quality of material you use. For the best material, be prepared to spend a few grand to do a full wrap. If you are doing it yourself, go to "Fellers" website or find a Fellers dealer and browse around. 3M, Avery, and Orafol make the best material, you just have to make sure you use WRAP material (it has channels built into the adhesive back so you can work air bubbles out even after it has been laid, it can also peel off and stick back on several times) DO NOT USE CHEAP STANDARD VINYL. You need a heat gun, a squeegie (spl), some razor blades, and lots of patience.
It is very simple to remove (especially the good stuff), and if you have problems, 3M makes a wheel that fits into a drill that you can use to take the vinyl off WITHOUT hurting or even scratching the paint.
Wraps are awesome and a lot cheaper, plus it would protect your paint in the meantime. Just my .02