My current situation:
I owe 51k in loan debt. My current payment, based on my AGI, is $161 per month. I can probably lower this slightly since I just started maxing out my retirement, which lowers my AGI. Let me know if my math is wrong here, but this is what I'm figuring
Assuming a 3% increase in payment per year, starting at 160 (this is an overestimate, I'm likely to get 2% raises per year). At year 10, my payments should be around $208/mo. I'm also assuming that max contributions to retirement continue to rise as they have in the past, about $500 every two-three years or so so I can continue to keep my AGI low. So my payments, per month, per year, look something like this:
1.) 160
2.) 165
3.) 170
4.) 175
etc...
Bringing my total of 120 payments to about $22000.
I'm currently at 1 year or 12 payments into PSLF, I do plan to stay in this field and work for another 10-15 years. I like my job, even after I reach FI I'll probably continue working, at a minimum of part time.