I think that if you have to ask the question, the 70 is probably the right answer.
The 70 will be a fair bit slower than a P85... but it will be WAY faster than the average car. If you really care about top acceleration then the P85 will be a fair bit better. But if you've been driving typical $20,000-level sedans cars like most people, then both will be unbelievably fast.
Autopilot features are fantastic. Even if you discount the fancier ones that aren't out yet, traffic-aware cruise control alone is worth the cost of entry, and that works very well right now.
Then there's the question of range. That's a harder one to answer, and will depend a lot on how you expect to drive. 230 miles versus 265 miles isn't a HUGE difference, but it's not insignificant. I've seen road trip warriors on here talking about their long trips in 60s, so it's certainly doable in a 70, but maybe a bit less convenient.