New c7100v Modem/Voice Activate/Setup Questions

I am currently using a Netgear c7000v2 Cable Modem/Router.  I have internet only and my curren plan is CONNECT MORE 200Mbps DOWN
10Mbps UP and auto-pay.  I bought a new Netgear C7100V Cable Modem/Router/Voice.  Its essentially the same modem as the c7000v2 except that it has Voice(Tel 1 Tel 2).  I want to add the XFINITY VOICE UNLIMITED SAVER PLAN and most likely would want to lower my Internet Plan to the CONNECT Plan 75D/10U to offset the cost of the Voice Plan.  The Connect plan would fit my needs as I do not need super speed now or in the future.  I don't want a TV plan either, just internete and phone.

Now I have several questions about Activating the new modem etc. if any of you knowledgable users would care to elaborate on.  And sorry if these get long because I want to make sure I give you the full information.

1)  I want to install and activate the modem soon(next week).  However I do NOT want to port my POTS landline current phone number over nor do I   want to use the phone for a couple of weeks.  In other words I want to activate the modem   then in about 2 weeks add Voice and ask xfiinity to port my number over.

       a) When I call to activate the modem do they activate the phone Tel 1 but not bill for it UNTIL I port my number over and actually start using          it? (that is, the Tel 1 Jack is alive but not in use.  No dialtone...then when I call xfinity to port my number over the line becomes ready to use)

      b) Or should I just activate the modem and do NOTHING about voice Tel 1 until I want to port my number over and start using the phone?(that is, Tel1 Jack dead until I call xfinity back and add Voice to my account)

2) Based on whats mentioned above, when I call xfinity should I tell them that I want to 1)-activate the modem  2)-change plan to Connect and 3)-Add Voice.     And tell them I do NOT want a phone number and I will call them back in 2 weeks to have them start the porting of my current line to my xfinity voice? or will they just not do anything about Tel1 port(leave it dead) until I actually call back to port my number to them?

3) Lastly what are good phone numbers to call for Activation of Modem and to      change plan?  I don't have a cellphone so I cannot use the app.  The url xfinity.com/activate do have phone numbers.

Thanks for reading and any suggestions or comments you may offer.
......Sk00ter