Under NCAA rules, assuming your formation looks something like this:
7 50 55 60 65 44 32
11 15
12
3
#44 is your numbering exception, #s 7, 11, 32, 15, 12, 3 are all eligible receivers.
You don't get to use the numbering exception if it's not obvious you might kick, so make sure your kicker lines up in a kicking position, and not "directly to the right" of the QB/Holder.