I personnally would try to work it the other way. Using the boards, the BEO's and floral estimates people have posted on here and also Passporter's Guide to Disney Weddings and Honeymoons I'd work up a a dream sheet and estimate of what I think my wedding would cost (location, reception, floral etc, don't forget hotel costs, travel, outfits, hair and make up, invitations etc). Then add in a little more on top of that amount as a cusion. From that I would look at my monthly household income and what I could realistically save and scrimp on. From that build a budget plan to get to my estimate to include any extra source of funds. That would then lead to a timeline and/or I would know what I could and could not do.