BSM and RCTA are not part of Lexus Safety System+. They are an optional package, but I think these features are way more useful than the other standard safety stuff.
Below is my deal. It was FWD with MSRP of $59274. My total drive-off was $4731 ($4500 was MSDs), so I actually rolled almost all fees/TTL/etc into the monthly, except for $231 to keep the monthly under $500. I also got 12k, so 10k would be alittle less.