Yeah, get an indica. I'd recommend Schnazzleberry #2 from Chimera Seeds or White Widow. Just don't get a sativa, as wackymack pointed out, the Sativa's cerebral high's get you paranoid. I know that some people can't handle a Sativa because the head high is so intense. Stay away from C99 if paranoid! One of my favorites.
yes an indica dominant strain will not likely make u as paranoid as a sativa strain but honestly that paranoia is in ur head lol u just need to get over it plus YOU shouldnt be paranoid if ur not doing anything wrong right?