Managing my debt...

[Sodium Duck]

Anyone here good with managing debt? I guess my question is:
How should I pay these down in the smartest way possible?

(A) Direct Stafford Unsubsidized Student Loans at 2.48%
$1,313.00
$1,312.00
$1,313.00
$1,312.00

(B) Non-Direct Stafford Unsubsidized Student Loan at 6.80%
$3,500.00

(C) Non-Direct Stafford Subsidized Student Loans at 6.80%
$3,911.00
$1,589.00

(D) Non-Direct Stafford Subsidized Student Loan at 6.80%
$3,026.00

(E) Non-Direct Stafford Subsidized Student Loan at 6.00%
$4,474.00 at 6.00%

(F) Parent PLUS Student Loan at 8.50%
$14,500.00

(G) MEFA Undergraduate Student Loan at 6.99%
$10,389.61 at 6.99%

(H) MEFA Undergraduate Student Loan at 6.89%
$11,282.05 at 6.89%

(I) Parent PLUS Student Loan at 8.40%
$12,530.000


Should I focus on paying down the highest interest rate loans first? Or I could pay off in full a few of the small Stafford loans and apply the freed up money to the higher interest rate loans? ...Or I could just pay the minimums every month and not have a life until 2019...