Take your time before settling the claim. You'll probably want to at least consult with an attorney, if not retain one.
Take plenty of photos of your bike and of your injuries. Keep taking photos of your injuries over time to document how long they take to heal.
Be as honest as you can with the insurance company, but don't give in to pressures to settle. Given the extent of your injuries you could be looking at med bills for quite a while.
And, finally, "pain and suffering" is your paycheck. You'll most likely get a shockingly large check for that (at least $10,000, in addition to your lost time at work, replacement bike, and all med/ambulance bills). Don't let them low-ball you...if you think they are, lawyer up.