VPN between 2 people having same ISP Part #2

Hello

I have IDM ADSL, and I have some friends that also IDM ADSL within beirut and some of them live in my neighborhood, you all know that there is no ISP in Lebanon that gives you a connection with a good Latency so I had the idea to make a VPN with my friends (from the same ISP of course) to share files and to make gaming servers with a very low latencie.
I called IDM but all what they want is to sell, sell, sell and get money money money, first time a girl answered me from there technical support and she didn't know what VPN means, second time a guy answered me and said "wait I will ask for you" he went off for like 3 mins and came back and told me I must contact the sale and ask them to buy a Real IP and make a VPN server in my house and my friends will install a VPN client and we can have a VPN.
For me this is bullshit, I don't want to pay them anything, it is only for fun and playing, so I had an idea :

My ADSL modem is a Thomson 585i when I turn it on the Modem gets dynamically a private IP 10.151.X.Y and my friend get a similar dynamic private IP, like this photo shows :


And by comparing tracert -d idm.net.lb with my friends :

My tracert :

C:\Users\Aly>tracert -d idm.net.lb

Tracing route to idm.net.lb [193.188.135.50]
over a maximum of 30 hops:

  1    38 ms    99 ms    99 ms  192.168.1.254
  2    43 ms    43 ms    43 ms  10.151.144.1       <=======
  3    44 ms    48 ms    44 ms  172.50.1.4
  4    43 ms    46 ms    43 ms  10.0.1.26
  5   356 ms   395 ms   408 ms  213.175.184.196
  6    48 ms    42 ms    43 ms  193.188.135.50

Trace complete.

My friend in the same neighborhood :

C:\Users\Kareem>tracert -d idm.net.lb

Tracing route to idm.net.lb [193.188.135.50]
over a maximum of 30 hops:

 1    39 ms    99 ms    99 ms  192.168.1.254
  2    44 ms    43 ms    43 ms  10.151.144.1      <===== Same Subnet
  3    45 ms    45 ms    42 ms  172.50.1.4
  4    41 ms    44 ms    45 ms  10.0.1.26
  5    44 ms    55 ms    63 ms  213.175.184.196
  6    46 ms    42 ms    44 ms  193.188.135.50

Trace complete.

And my friend that live within beirut but little far away from me :

C:\Users\Darkness>tracert -d idm.net.lb

Tracing route to idm.net.lb [193.188.135.50]
over a maximum of 30 hops:

  1    86 ms    98 ms    99 ms  192.168.1.254
  2    42 ms    43 ms    44 ms  10.148.Y.Z            <== I dont remember for sure but it was close to mine
  3    44 ms    44 ms    43 ms  172.50.1.4
  4    44 ms    43 ms    44 ms  10.0.1.26
  5    43 ms    56 ms    44 ms  213.175.184.196
  6    47 ms    44 ms    43 ms  193.188.135.50

Trace complete.

Here is the funny thing after that my ISP blown all my hopes I tried something :
I made a gaming server of the game SAMP (San andreas Multiplayer) and I asked my both of my friends the one on my same subnet 10.151.144.1 and the other on the subnet 10.148.Y.Z to add my server and I gave them the IP that my ADSL modem gets dynamically which was at that time 10.151.154.216:7777 (7777 is the port game standard port) and they added this IP and they could access my serer and with a very low Ping like 30-50 ms, but unfortunately this only worked with this game and didn't work with any other game.

in addition my modem and my friends modem has a Remote assistance option that allow the ISP to access my modem remotely for support and I tried with my friend once he gave me his modem IP like this https://10.151.158.233:51003 I put it in my browser and I was asked for a user name and pass (Which are generated by the modem) and I was able to modify my friend modem, I turned on and off his Wifi from my house....

My Big question after that I gave you all those info and tests that I made, Can I make a High speed VPN or anything to connect with my friends without paying anything to my lame ISP and without using the internet I want to use the IDM infrastructure network ????

Sorry for the huge post and thx for reading in case you read it all ;)