Haydee Leon is planning her wedding with a spreadsheet in hand. It's the “something new” prospective brides need these days. Leon and her fiance, Chris Mandernach, 25, have set a budget for their Sept. 18 wedding at The Clubhouse on Baltimore, and she's determined not to overspend. When they got engaged in December, they decided they wanted a wedding that was elegant and in good taste, “but without going overboard,” says Leon, 26, who lives in Overland Park. “Something that was just reasonable.” In the end, they decided that $16,000 was reasonable. It is, compared to the cost of a...