Attending Wedding TOMORROW -- What Should I Wear?

Readers, one of my oldest male friends is getting married tomorrow and we're invited.  It will be my first gay wedding!



It's being held in a cabaret space in midtown at noon; it's a luncheon.  The invitation says "cocktail attire."



I'm not sure what to wear and could use your help.

OPTION 1: the vintage 70's sheet suit I made last year (originally intended as a muslin for a suit I never tackled).  I finally hemmed the pants and added buttons to the sleeves today, so it's ready to go.



The shirt is lavender voile with a white collar.



QUESTION: Could I get away with wearing pristine white Vans slip-ons instead of shoes, or are shoes a must?



If shoes, I'd wear these Gucci loafers picked up at a consignment shop years ago.



I don't think I need a tie, but if I do wear one, I thought I'd go with solid black to match the shoes -- plus it's the only solid tie I have.  I can't add another pattern to this ensemble without spontaneously combusting.



Is it just too much?

It is Easter weekend, and to quote Michael, If you can't wear that suit to a gay wedding at Studio 54, when can you wear it?

He has a point but I also have to feel comfortable; plus I don't want to steal too much focus from the grooms.

So here's OPTION 2: flowered jacket with white linen pants, black tie and black loafers.  A little less Carnaby Street but still fun.



Finally, there's OPTION 3: navy linen blazer and gray pants.



Too boring?

I've limited myself to garments I've sewn, which is pretty much all I have in my closet at this point. 

What do you think -- option 1, 2, or 3?  Something else entirely?

Have a great day, everybody, and thanks a lot!