Well the unfortunate part is this server is still located in Chicago...
I know the NA servers are as well and I apologize so the coast people, I've been hosting my servers there for nearly a decade now.
But...
My servers are on an extremely fast pipeline, and when the CPU issue is sorted out that I people on the coasts should not see pings higher than 70's, but of course I cannot guarantee this, this is just from past experiences running CS and TF2 servers out of the same location.
As far as setting a ping restriction, I don't really want to make any changes to this server as we don't know why my server is working and NA servers are not, so I don't want to do anything that might create issues with the server running.