My suggestion, pray, eat lots of anchovies, and throw oregano over your shoulder at 2100 Z every day; this will please the FSI gods and assure mirror-image lazy 8s, 0 degree deviation during engine outs and perfect NDB holds. Don't worry, you'll be FINE!
Go talk to the student advisor and tell him what you are looking for and what you are looking to avoid. He's a good guy and will listen to you. He once told me he was amazed that the majority of folks just leave it up to random chance!
You'll be fine....if you don't get along, change! You're the customer and you aren't going to learn if you detest your instructor. There aren't too many I wouldn't want, though...good cadre of folks.