Seating dilemma, HELP?

My Dad said I should sit him with my two sisters. I was going to sit my sisters with my Aunt and my cousin. My Aunt is single and does not get along wit my Dad, but my sisters and I are very close to her. My Dad has about 7 of his brothers coming to the wedding, My aunt has no one. How can I pull this off, and make everyone happy? I'm not having the wedding party sit with us. I was going to have all the wedding party sit together, and sneak my Aunt in there.

My next dilemma is the groom's parents. The entire wedding with the exception of about 5-6 people are from my side of the family. Is it OK to sit his parents and my Dad at the same table?

I'm stressing out, please give me your comments.