Xtreme mass (new formulation) is MethylStenbolone which is very similar to Superdrol. Xtreme DMZ is Dymethazine which is also very similar to Superdrol (a little bit weaker).
Staking both is a not a great idea. First, two are methylated so it’s a lot of stress on liver. Second, both are prohormones that CAN produces major side effects. Staking both might give you side effects that will outcome the potential good effects from them.
I think it would be better to do a one good cycle of Xtreme Mass alone or Xtreme DMZ alone.
Many years ago i worked for a small shop. The owner used to live on Eagle street, so his first server was named Eagle1. The trend became to name servers after birds (Condor, Falcon, etc.) Shortly after that, someone named their workstation after cartoon birds and that quickly followed. I chose "Scrooge" for "Scrooge McDuck". One day a client called me to report a problem with his website. I uploaded the files, but the path to the image was hard coded from it being on my PC and I had to explain to him why "Scrooge" was part of the naming convention in his files and that it didn't refer to him.
How to do it: There are several ways, but the 'book example' is by utilizing two firewalls (of course you can achieve the same result with one firewall and smart configuration, although hardware isolation is nicer). Your main firewall is between internet and the server and the second firewall between the server and the private network. On this second firewall, all access from the server to the private network ideally would be forbiden (of course it would be a statefull firewall so if you initiate a connection from the private network to the server it would work).