I usually have between 400 and 1,800 visitors online at any given time (thanks to having a niche topic, a lot of information, and some hard earned seo)
I also have about 580 lines in my spiders/bots list.
https://www.ubbdev.com/spider-list/UBBT can handle it, no problem. Just need to make sure you're giving php enough memory to work with.
