Magnum have you moved already?
If not, I would say GO TO CONWAY!!!
I live in Florence and I'm from Myrtle Beach. Florence is in a good location in terms of driving times from places... but does that really matter when you're living and working somewhere all the time?
Florence is trafficky, too, more so than you think. It's the biggest city in the Pee Dee region but that doesn't say much because it gets smaller and smaller the longer you're here. I've only been here for about 2 months. When my lease ends I'll be in Conway, too.
I only moved to Florence because it's closer to my grad school program, which is IN florence at FMU. Don't make the same mistake I did!!