diy real centerpiece flowers- Am i crazy?

Hey DIYers!

I have been comparing local florists and having a really hard time justifying spending $1600 plus on flowers that will just die and we will not be able to enjoy after the wedding (mini mooning right after wedding).

I know I don't want the hassle and stress of making the bouquets or boutonnieres but I feel like the centerpieces wouldn't be too hard to do! I actually think it would be really fun to get a bunch of family and friends over, drink mimosas and arrange flowers. I'll pay a florist to make the other things and just do the centerpieces myself.

I have a really clear simple vision of how I want the centerpieces to look. A simple glass vase with greens, sunflowers and baby's breath. The only thing that's worrying me is having to put them together the day before our wedding.

People who are already married/further into planning than I am, how busy were you the day before your wedding? Is this doable or am I going to be super stressed if I do this?