I disagree.
Apply for visa with 6 bands(L-6.5,W-6 ,R-5.5,S-5.5).
I prepared study visa application for my brother and he got approved within 21 days.He has same score as yours.He has UG(B.tech(IT))-78%,Diploma- 70%
On top of it, he already have a masters in India and applied for Masters again...