The recommendation would be to put your backup server to the least loaded server. Also it would make sense to install it where RDX/NAS is currently mounted to.
As regards the bare-metal recovery, then Veeam Backup & Replication doesn't do it, however if you're concerned on protected not only VMs, but other servers too, I would recommend taking a look at Veeam Agent for Microsoft Windows
. This product allows doing the BMR.