Then why'd ya ask if you've decided?
Other than money, you have nothing to lose by trying. Not so sure how well just "asking" the schools to wait will work, though... Maybe your GPA/ECs will be your saving graces and a few schools will hold out... Other than that low GPA, you have a good application. Things may not work out this year, but chances are definitely better for the next year if you can keep raising that GPA and continuing an upward trend.