Wait. This is Tesla, remember? LR+ might be the same thing with a new name, or it might be a 200kwh battery that hasn't been announced yet, or anything in between. The only thing you should know as a Tesla owner is you shouldn't get one that's already known to be older tech.
Case in point, MCU2 on model S was touted as the same as MCU1 when it came out, but within 6 months MCU1 was left in the dust by newer update it would never get. Tesla is always pushing high tech new stuff to cars, and is slowly forgetting the old stuff even exists. Be as far ahead of the front of that tech curve as you can be.