Hi from Calif! I also agree with others here. I don't recommend going down the P2 path, that craft is over 5yrs old. DJI has come a long way since then, you'd be passing up some of the best features of DJI IMO. Parts will be a problem on P2 also, as mentioned.
If you're not aware, Lightbridge communications with their craft is what put DJI years ahead of other manufactures. It allows over 2 miles of range with good video and control capabilities. The P2 and P3S uses Wifi communications, good for about 2000' reliably in ideal conditions. I would recommend at least a P3Pro which was the first craft with Lightbridge, if you can find a good buy in your budget. It's worth it to wait and save more money to get at least a P3P. That's a great craft, even today.
Mavic Mini will run circles around P2 also, but might not be as capable with wind, which could be an issue in Chicago. The mini is better than P2 with video quality, portability, flight range (even though it uses "enhanced Wifi), flight time (25min battery endurance instead of 15min), gimbal quality, and software app capabilities. Mini is also current, so parts are available, and you don't have to register it with the FAA, due to it's 249gm weight.