just starting in JKD, how long to get proficient?

[jason]

I'm starting private instruction in JKD next week. I'll go twice a week with an hour for each session.

I'm in good shape physically, but have zero martial arts/boxing/wrestling experience or knowledge.

Based on all of this (and I am committed to learning this), how long do you guys think it will take me to become proficient in it?

Also, if any of you get private, or even group instruction, what is the normal charge per hour?

Thanks all.

Jason