Something to watch out for: Current 2018 Whitehouse Budget proposal is planning to eliminate PSLF and consolidate all IBR to a single method.
Pg 140
https://www.whitehouse.gov/sites/whitehouse.gov/files/omb/budget/fy2018/msar.pdf
Pg 140
https://www.whitehouse.gov/sites/whitehouse.gov/files/omb/budget/fy2018/msar.pdf