Yale's moonlighting policy is that you're only allowed to moonlight for weekend shifts at the VA. This is reserved for CA-2 and CA-3 (mostly 3s) since you must have rotated at the VA first before you can cover it alone. Therefore, moonlighting during PGY-2/CA-1 is technically not allowed.
As far as being able to afford living in New Haven, our salaries are pretty decent compared to the cost of living here in CT. You can rent in a nice suburban area affordably with our salaries. A good number of residents have even been able to purchase real estate in the area. Good luck to those of you coming here in the future!