Thanks for the suggestions. I would LOVE to use pigs but unfortunately we are too close to town to be zoned for that.
I'm actually looking to till first, then sow the clover or whatever to cover the soil and hopefully tamp out some of the grass. But I was thinking something short, so I can leave it in the pathways even when I plant the garden. I'll look into how long it takes the different varieties to flower. That is good advice and I didn't think about that.
Ideally, since we can't use pigs I would like to do a deep mulch but I didn't have the means for that this year.