Tesla Motors Club

Hello! I'm an almost owner of a pre-owned 2014 MS 60 that I've purchase and will be picking up in Orlando soon. It has 41k on it and as I have not spoken with a Delivery Advisor yet, I have no idea whether or not the UMC is in the car and will be included. So I have questions that maybe some of you could answer if you would!

First, my electrician is going to install a 60a dedicated circuit in my garage and it will have a NEMA 14-50 outlet. I chose NOT to go with the Tesla wall-mounted solution because the cost of installation would be around $2000, not counting the cost of said charger. With the hopefully-supplied UMC and proper 14-50 adapter, I understand that I will at best get 32A of charge from this device, but my electrician (who has installed dozens of Tesla chargers) says that he can I can run at 48A safely if I have the right charger. Which brings me to my question:

Have any of you used a third-party charger, such as a ChargePoint or similar, which allows you to configure max charging amperage? I know I'd have to use the adapter, but I think it would be nice to have 48A available for my S60. I see that as being a better option rather than using the slower Tesla UMC. Thoughts? Bueller?