Tesla Motors Club

I just put in an order for the M3 LR RWD and am now trying to figure out which charging option to go with in my garage. I was starting to lean towards the 14-50 plug since it's cheaper than the wall charger and almost as high on charge miles per hour. But then I ran across the fact that the mobile charger cable now included with the M3 is limited to 32 amps (Gen 1 was 40 but Gen 2 is only 32) and thus can't take advantage of the 40 amps the 14-50 plug can get. The wall charger can do 48 amps which is the max for the M3 LR and 50% higher than what I can get with the mobile charger cable and a 14-50 plug.

I then thought maybe I just get another cable that can handle 40 amps, but that cable costs as much or more than the wall charger which can give me 48 amps. So now I'm thinking of going with the wall charger as a result. I sometimes may need to fully charge overnight from a day where I take the charge pretty low. Also, I can get a plan with my electric company that gives me .09 cents per Kw between midnight and 6 AM, but would be 2.5x - 6x times higher otherwise depending on time of day and season, so getting a full charge in 6 hours is important.

Do I have all this right and thus my choice of wall charger makes sense? What might I be missing here? Thanks all.