3185 - For each payment on your new home, donate slightly over 10 percent to tzedakah.

As your blessings are recited at the holy Tzion of the Rebbe, I suggest that you distribute half of the amount to three institutions associated with the Rebbe. The other half can be distributed as you see fit. https://www.torahrecordings.com/rebbe/igroskodesh/010/004/3185