jsidhu762: Would it be out of character for a ranger to multi class as a rogue + fighter?
Classes define what abilities your character has, not who he/she is. So no, it shouldn't be out of character at all.
However, I don't see much point to being a Ranger in the first place if you plan on multi-classing Fighter and Rogue. You already get most of the abilities that matter from your Fighter and Rogue levels. In addition, your Ranger abilities become completely useless if you decide to wear heavy armor at some point, whereas the only penalty that applies to Rogues is that they have a harder time with stealth (which is irrelevant if you're preparing for a frontal-assault battle).
So, I'd say if you plan to do this start your career at level 1 as a Rogue, multi-class Fighter as soon as you reach level 2, then balance the two classes to taste.