Too many people= DRAMA. I need some serious advice.?

Yikes! Seems like you have a situation here. I'm sorry that you are in the middle of family drama when it's suppose to be about the bride and groom. I would stick to your guns about who you want there & who you don't. I would tell them all you respect them enough to hope they'd do the same when it afterall is your wedding. Don't worry about hurting others feelings, if they love you & care about you they'll get over it and still love and respect you. Weddings should be fun and happy, keep it simple.