I think its perfectly possible, but i think i would rather have one, and not used it, than need it and.........
The main question here is probably, how you want to reach Sag A, as fast as possible, here i think you dont need it, or do you want actually do some exploring and spend some time in the dark. Most my damage came from planetary rings, those edges are sometimes almost invisible, and neutron stars and black holes could be very dangerous, if you loose your focus.
Im out for more than 2 months, had few accidents, but if i didnt have it, it wouldnt be much of a problem. I think my most damaged module would be at 80%. I just reach Sag A 5 days ago, so still a lot of time to reach bubble, but like i said, it wouldnt be much of a problem i i didnt have it.
You just need to be very carefull, and try to avoid those binary systems.