Activity for Kliehr

So I was planning a backyard wedding at my parents but the weather is going back and forth between rain and sun. I need a back up plan but have little to no money in my budget to rent a space for ceremony and reception. I am having 75 guests at most....

So my two options are 1 crimson, turquoise, and white 2 burgundy, charcoal, white and black FH said do what I want... But I'm so stuck!

My man proposed on the 8th of June and I am so scatter-brained and don't know where to start. I know the wedding will be September 2015 but recently found out he Wants an indoor wedding but I have never really pictured an indoor wedding so I don't...