aAdopt a kollel is a wonderful idea and we should definitely keep it, you cant lose by giving tzedaka as it says ??? by the Passuk (meaning you will get paid back).
However it is worth to point out that your city friends and family come first. See Ahabas Chesed the 6th perek 2nd pgh that even if someone else is in a worse situation you should first help your family or city.
Also see the Chofetz Chaim sefer called ???? ??? ??? ?? where he says that if you don’t give Tzedaka properly and accordingly, their is a fair chance you wont get rewarded the way you should be.