Agree on running the load calculation first — a 48A continuous draw on a 60A subpanel leaves almost nothing for the compressor or lights, and that's before any diversity factor. Given the 20 kWh pack, dialing the charger down to 24 or 32A still gets you a full charge well within an overnight...
The full wheel-off clean with the inner arches done properly is the part most people skip, so that's a solid day's work even if your arms are feeling it now. The Camaro service sounds like the right approach, getting the oil and coolant sorted before it comes out rather than after. What year is...