The best option I think it would be to extend out your payment plan as far as possible as this won't put you in a final crisis every month and severely restrict your quality of life. The second thing you should do is make a monthly budget plan by calculating how much you spend each month on everything. For the budget plan I would suggest using Mint.com. Once you know how much you spend each month you can make cut backs if needed. Also at anytime you can increase the amount you pay back each month to reach your goal of $2000/month.
Real life personal example:
Debt: $155,000 (approximate)
Payment Plan: (15-20years)
Salary: $126,600
Month Payment: $1050 (will gradually increase, mine is around $1,080 now)
All expenses: $1,450 (approximate)
Monthly savings: ($4,000-$3,000)~ I put into my savings account for investing purposes
Of course this all depends on where you live and if you are single or have kids. I'm single, don't live in California, and have a really low rent. Hope this helps!