Here’s the deal: No one has has “No. That’ll never work,” so that’s as close to a “yes” as you’re going to get.
You say that you’ll have X user visits, but you don’t say whether those users will generate 1, 10, 100, or 1000 page views. And you probably don’t know.
If you’ve got this community running with some PHP-based forum and use the same hardware, Discourse will almost certainly be fine. You do need to make sure that the database will fit in RAM.