At the black hole horizon, light travels away from the black hole at speed = zero, relative to the center(singularity). if light moves ten times slower, then it would take 10 times longer to reach it's destination. so if you are in 10 times slower light, time goes very slowly for you, and very fast for people in the 10 times faster light, they will age faster.
The problem is that, lateral traveling light still travels sideways very fast even if it doesn't travel away from the black hole very fast.
That means that your body is turned into spaghetti, as explained by Steven Hawkins in his book, movement around the BH is 100000ds times faster than up down movement. Which makes entry of coherent matter into a black hole nonsensical.
In fact, the earth would be the size of a peanut if it was lodged on the edge of a black hole, as it would be so compressed by gravity, in terms of compression of matter by gravity. All the neutrons and the protons would be thoroughly disassembled and turned into a space plasma and it would be very hot and magnetically bizarre and fusioning, Chemical Elements would not exist near event horizon.
So, I suggest that being in a place where time is 7yrs of times faster than on earth, means that gravity would be so huge already, that the guy would be deformed by the gravitational disparity on the radial and angular axis.
Up to you to answer if you can enter a black hole, seeing as you would turn into cobwebs of spaghetti and compressed to the size of a grain of dust a few nanometers wide, and then reconstitute yourself again upon exit.
An interesting thing about singularities is that time is nearly infinitely slower there, as nothing can move anywhere fast there... and that 1000 big bang to cosmic-lights-out timescales could occur in 1 second of earth time at a high enough compression of mass. however there is no valid science yet to say if matter starts to resist compression beyond a certain size, although it is theorised both pro and against.