It's the best hunting spawn for lvls 450-800, but as solo 400 you lack of damage, and chance of dying is big due to fact you must keep running and there are really many monsters, so I wouldn't recommend that, maybe just for fun.
The only way there for you to hunt efficiently is 4 voc teamhunt, but it's not an easy spawn comparing to other like prison/veno souls/spectres.
For solo hunt you can earlier start cobra bastion, it's easier and you can make way better exp, Issavi is getting good solo at around 800-850lvl when your damage is good enough.