"We're excited," Bush said ... noting the guest list will mostly be composed of family members.
But the best part of the clip is when we suggested that the soon-to-be married couple should buy LaDainian Tomlinson's mansion ... and Reggie responded, "I'm tapped out. This wedding is costing me a lot of money!"
Don't feel too bad for Reggie -- he's currently in the middle of a 4-year $16 million contract with the Detroit Lions. And don't forget his monstrous rookie contract with the Saints ... a 6-year deal $62 million deal with more than $26.5 in guaranteed money.