1. Yes, totally worth it.
2. Answered above. Personally I rode without one in late November and early December. Right now my local cable is about 40, so high 60's sounds lovely to me
![Smile](images/smilies/smile.gif)
3............
Definitely start on the beginner cable.
Can you do a standing dock start?
Are you goofy or regular? Goofy is easier as you just take a heel side edge around the corners.
It takes time to get a feel for the corners, the 90 degree ones can be very unforgiving.
Have you ever hit obstacles?
You'll pick it up pretty quickly, I would not bother with a kneeboard, you can figure out the corners on a wakeboard, I would only suggest a kneeboard so someone who is a complete beginner.
If you are a competent rider and you've never ridden cable / hit obstacles, I think you could ride the beginner cable for an hour an not get bored. Small rail, little kickers and wedges regular and switch, try 180's , 360's .......
Try to get as much prep, waivers etc. completed before land and watch as many instructional video's as you can.
Standing start:
https://www.youtube.com/watch?v=__nZW2ZxegU
1st: osbtacle:
https://www.youtube.com/watch?v=wobi1_a36gU