Very fun map! Ya it's big, but nothing that having alot of players can't fix (bot controlled players can help with that, say bot_minplayers 16.) One problem with the bots though is that they get stuck on those slightly sunken grates in the dark basement. Those slightly sunken grates are an anomaly; I suppose the low ceiling prevents you from automatically stepping out of them, however, you can jump out of them even though you hit your head in the process. I think the bot logic is trying to have the bots just step out, but the engine for some reason doesn't allow stepping out with a low ceiling.
It's fun running over the pews, which can easily be done from back to forth.
Edited 8 hours after the original posting.