If I'm being honest, the DCFC doesn't bother me as much as having the 3.3kWh charger. I just got a 2017 Volt a few days ago myself (LOVE IT), and it would be really nice to be able to charge at 6.6kWh like most EV cars out there. Juice up that battery a bit faster (< 3 hours by my estimate) and free up more chargers more often. That being said, I see clipper creeks everywhere (live in Nor Cal) and they never seem to be broken. You might consider just having a 240V 20+Amp circuit added if you have a garage and getting the cable. Then if you move you can take that with you super easy.

https://www.amazon.com/ClipperCreek-LCS-20P-Charging-Station-CERTIFIED/dp/B00LKF69O0