I've been playing in the Myrtle Beach World Am every August since 2012
Here are some suggestions...
Like a couple of people mentioned, Myrtlewood is a good place to start...Unless something has changed drastically in the past year, stay away from the Big Cats...they were having severe financial problems and last year players were losing balls in the fairways and chipping on the greens to get the ball to the hole...
some other courses to consider for your handicaps: Crow Creek, Farmstead, River Hills
some nicer courses: Kings North, Long Bay, Grande Dunes, Glen Dornoch
other courses I like but are off US 501 (main drag going into Myrtle, pretty heavy traffic) Wild Wing, The Wizard, The Witch
some other easier North Myrtle courses but not as nice: Beechwood, Possum Trot, Eagles Nest
plenty of choices, wide variety, have fun