The regen level probably makes no difference if combined with already efficient driving. The idea of coasting by letting off the pedal fully in an EV is flawed. You “coast” in an EV by holding the pedal in a neutral power setting.

Sorry I read “hopefully” as an imperative. At least in the US static home IPs are very rare so I generally assume some form of DDNS will be needed for any home hosting solution

Or just a dynamics dns service like duckdns. Point a CNAME at your duckdns name. Or better still, a cron running locally and updating cloudflare dns etc. Lots of better options for home hosting than hoping your ip stays static.

How about this. If self check out is a problem go back to paying cashiers.