Hey @Raymond Y. pumped you're looking to invest in Allentown! Paying all cash makes things a lot simpler for sure and sellers like that. You also have a lot of single family row homes that you can pick up around 50K that are in great shape. I helped a client sell a SFH last month that made great cash flow. Here it is contrasted with a duplex in bethlehem.
SFH: 53K purchase price and 850 rent,
After taxes, Insurance, management, maintenance, trash and vacancy your looking at 483 a month cash flow. 10% cash on cash return.
https://www.biggerpockets.com/calculators/shared/799536/883374da-28f1-4c6c-8db3-66a54da2a19c
MFH: 95K offer with 45% down probably could raise rents a little to get 1400/month
After all the expenses plus the debt service you're looking at 528 a month cash flow with 12% cash on cash
https://www.biggerpockets.com/calculators/shared/799536/92455a43-f803-4687-a155-214530dc54d1
MFH: 95K offer with 20% down drops you to 401 a month cash flow, but you only used 26K giving you 18% cash on cash return leaving you with 24K to go buy another place...
https://www.biggerpockets.com/calculators/shared/799536/37e0d7d1-2628-4c90-9978-7af38635110d
Depends a lot on your goals. You could always pay cash on the first place, get things stable and then pull out a chunk of your money for the next one. Hope this helps!