Tesla Motors Club

Hi Folks, I've been reading entirely too much and have spent entirely too much time thinking about this. I was hoping to get the advice of some knowledgable folks like yourselves.

My family of 4 is in the market for a used model s. Looking to spend in the low 50's.This will be our primary road trip car hence the models s over a model 3.

So a few questions since I don't have real-life experience with these cars.

1) is the extra 35 mile range of the 90D going to make any sort of difference? Part of me doesn't think so, but the other part of me figures that once the battery degrades that having the extra padding of the 90D would be nice.

2) I'm wary of being a first adopter of autopilot. I'm almost 100% sure the sensor suite on AP1 is going to be insufficient for self driving and I doubt AP2 will be able to do it either. At this point I don't see any reason to spend more for ap2. Am I missing something?

3) Besides the ability to have the HEPA airfilter is there any reason to buy a 75 2016.5 and above?

and finally..4) what would you all choose? am I not thinking about something important?

Really appreciate the advice!

best,
EThan