Take some theory lessons for a year, then quite and teach yourself.  I played piano before playing guitar and found that lessons didnt help much.  I started teaching myself with simple scales and speed exercises and I've gotten so much better than i have with an instructor.
Teaching yourself is key to finding your own unique playing style.  Just look at it this way, most major guitarists taught themselves.  They had no formal lessons and developed everything on their own.
Examples: Slash, Eddie Van Halen, Angus Young, Jimmy Page, Zakk Wylde, Dimebage... and many many more.