I don't think I want my parents at my wedding...

I know it sounds messed up but they drive me crazy!! They are starting to make me not want a wedding and to just elope somewhere. My fiance and I have known each other since we were 11. We dated since we were 19 (we're both 27) and my parents adore him. We got engaged in Jamaica and he even called my dad beforehand to ask for my hand in marriage. My parents moved to FLA and left my younger (23) sister and the house 2years ago. My mom moved back this year to teach and my father stayed in FLA to work. (??? I am as confused as you) She chain smokes and drinks... a lot. They (my parents) have done nothing but make my engagement miserable. My mom seems jealous at times. At first my father (who has money) was going to 'maybe give $5,000' but he in turn wanted half of my monetary gifts from the wedding, so my fiance and I decided to pay for it ourselves to which he said 'i'm deducting $2,000 from your wedding gift since you are living rent free'... I don't pay rent but I do pay a few bills in the house and I am saving for a wedding.... Oh and he drinks too..
My mom never said congratulations... But she did tell my dad she wants a new ring.
My engagement party was the Sat following Thanksgiving. MY parents were DRUNK thanksgiving night (as usual).. and my mother EXPLODED into a screaming fit, when I told them they cannot get drunk in front of my FH's parents at the engagement party... The actual party was ok, considering the day of, my father told my mother he wasn't 'feeling it'. My mother YELLED her kind words about my FH during the toast and I cringed the whole time and then she called my sister and I 'witches' in front of about 60 people. At the end of the night my father got into a political discussion with my FH's father (whom he had just met) and asked him 'if the US is so bad, why don't you go back to Haiti'....
Then my mother came in from the kitchen with some screaming commentary to which I got my gifts and fled to my fiance house....
Last night I was doing my guest list and my father told me 'just send invites to everybody, a lot of people won't be able to make it because it's on a Friday and people have to work you know...'

so.... can you guys tell me how to not invite them?

thanks...