Very Difficult to get confirmed.
Only One 2A coach (mere 4 seats in PQWL of VSKP) plus the demand is also high. Look for alternate connecting journey or else book in GNWL of this train i.e from Mangalore to Kharagpur and alight at VSKP. yes bit extra money will be spent but still confirm seat can be possible.
3A for MAQ to KGP is GNWL 9. (Good confirm chances as 4 3A coaches are there).