Congrats on your new (to you) Roadster!
What you install for a charger depends on a lot of factors. The first question I would ask is what other vehicles, future or present, will need to use this charging source? Is the Roadster the only EV you plan to charge at this location? If so, I would get a dedicated Roadster charger. Using an adapter is slightly less convenient on a daily basis than a native Roadster charger. You can get a new one on ebay right now for about the same price as just an adapter. This would be the cheapest overall solution.
*NEW* TESLA Roadster High Power Charger / Wall Charger - Model TS-70 | eBay
Having said that, the CAN SR adapter (modern Tesla 2 connector to Roadster) can be enormously handy. Not only can you use it at home if you don't buy a native Roadster charger, it will also enable you to charge from any modern Tesla charger except superchargers. [Full disclosure - I'm biased because I sell the CAN SR.] Now the initial question has more relevance - what other vehicles, future or present, will need to use this charger? The NEMA 14-50 outlet (mentioned above) is quite versatile because you can plug almost any charging cable into it, including Tesla's 40A (for a 50A circuit) Universal Mobile Connector (UMC). The UMC, coupled with the CAN SR adapter, would charge your Roadster in addition to any other Tesla. But the overall cost would be more than the native Roadster charger on ebay.
There is a competing standard to Tesla 2 called J1772. All non-Tesla EVs use J1772. Tesla's can use it too with an adapter. That's why most public charging stations are J1772. Just like the UMC, you can purchase a J1772 charging cable and charge your Roadster with a different adapter called CAN JR. That's essentially what
@gregd is doing as he described in his post above. That would be an especially good choice if you also plan to charge a non-Tesla vehicle at your condo some day. So we've circled around to my original question again.
If you're serious about your desire to charge quickly, be sure to get a 40A UMC, not the cheaper 32A unit that Tesla sells. Ther's a lot of experience charging Roadsters among the members on this forum, so don't hesitate to ask questions.