Florist prices are ridiculus?  Nice generalization.

Florist prices are ridiculus= you can't afford to use a florist right? Or you didn't plan accordingly, the flowers are almost your last thing to deal with and your budget is gone.  Yet you still want high end flowers.

  I can tell you have no idea what a florist even does. 

Also, you aren't buying wholesale.  Are you tax exempt?? It's funny that you think you are buying wholesale because you aren't.  If you think you are getting wholesale prices you are wrong again.
 
Do you really think a true floral wholesaler wants to sell to someone like you (who knows nothing about floral, has no money and a takes up way too much time asking questions that should be directed to a florist) and charge the same as they
 charge a florist you are wrong yet again. Fifty Flowers and places like that are not wholesale.  Funny you buy into that!

You seem clueless. I am quite sure you have no idea how to process and care for Callas let alone design with them and put together a wedding 

Although callas are easier to work with, there is more involved and more to be considered than you seem to know.  

You don't want to pay a florist/can't afford so you denigrate an entire profession, and yet you come on here looking for free advice.
Your flower choices (especially the mention of Gardenias) tells me you are clueless.
Luckily for you Callas are mostly very durable (although you know nothing about how to keep the stems from becoming soggy or how to tie off a mini calla bouquet without bending and ruining the stems ) so everyting will probaly be okay with that part.  Design, shape color, photos and all that, well thats another story!
Good Luck with that. I tell you right now, your bm ideas are a hot mess and you will be horrified 10 years from now when you look at your pictures.  
You must be quite tall if you are considering using standard callas for you bridal bouquet!