Wedding Wednesday: Dress options

For the last couple of weeks, I’ve been contemplating what kind of dress to wear to my wedding. Here’s what I’m thinking:
  • Short
  • Cream-colored or off-white (because white looks hideous on me)
  • Some kind of fun detail
  • Inexpensive
I’ll admit I’m a little lost on anything more specific. Should I go with something lacy, like this lovely dress from Alfred Angelo? (It’s out of my price range, but I’m sure I could find something similar.)
This ivory colored dress from Ann Taylor has pretty details. (Still fairly expensive, but perhaps I could find a coupon.) 
I’ve also thought about asking Johnny’s mom if she’d be interested in making me a dress like this one from a McCall pattern. How cute would it look with a fascinator? (Not to mention Derby-appropriate!)
Accompanying the dress dilemma is another problem: shoes. I definitely don’t want to wear cowboy boots, because ugh. I’m hesitant to wear sandals, because horses. And I’m on the fence about heels, because walking on grass. 
What do y’all think? Is a short dress tacky? Should I just buy something in seersucker? Is it weird to ask Johnny’s mom about making a dress? (She does enjoy sewing and is a wonderful seamstress.) What kind of shoes should I wear?