Urgent, confirmation of Debian 7.7.0 amd64 specs

Dear All

My name is Quek from Malaysia. I am now downloading Debian 7.7.0 amd64.

Right now my workstation uses w****** 7 ultimate 64bit, with one(1) CPU (Core i7-4770K), and 32GB of RAM.

Before I decide to install it for my upcoming "compute-server", I need to confirm with ALL the following:

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1. According to: https://www.debian.org/ports/amd64/

"Debian 7.7.0 amd64 supports up to 64TB of RAM", which is much more than even the 192GB limit for w******. Kindly confirm.

2. According to: https://www.gnu.org/philosophy/ubuntu-spyware.html

It appears to me that some GNU OS has this annoying problem, how about Debian 7.7.0 amd64?

3. According to: https://www.gnu.org/distros/common-distros.html

It appears to me than some of the features in the firmware/repository are not free. Therefore, during installation of Debian 7.7.0 amd64,
    a. "the installer in some cases recommends these nonfree firmware files for the peripherals on the machine."
        Will I be given the choice not to install those nonfree features?
    b. If I do so, i. Will it affect the performance of the OS?

                     ii. Will the maximum supporting RAM remains 64TB?

                      iii. Will I still benefit from ALL advantages amd64 offers, as described in "A complete 64bit userland" of
                            site https://www.debian.org/ports/amd64/?

4. According to http://cdimage.debian.org/debian-cd/7.7.0/amd64/iso-dvd/ ,
    There are 5 isos (which I am downloading)
    "Debian-7.7.0-amd64-DVD-1.iso            2014-10-18 15:39 3.7G "
    "Debian-7.7.0-amd64-DVD-2.iso            2014-10-18 15:39 4.4G "
    "Debian-7.7.0-amd64-DVD-3.iso            2014-10-18 15:39 4.4G "
    "Debian-update-7.7.0-amd64-DVD-1.iso 2014-10-19 02:16 4.2G "
    "Debian-update-7.7.0-amd64-DVD-2.iso 2014-10-19 02:19 1.6G "
Which of them is/are mandatory for installation of Debian 7.7.0 amd64?
(Note: Please do NOT direct me to the net-installer! I need a robust DVD file than enables me to install it offline! Moreover,
this compute-server may not be connected to the internet)

5. Some Server OS (such as w****** server standard), supports only few (e.g. less than 4) CPUs.
    Some others (such as w****** server datacenter), supports "infinite" CPUs.
    So how about Debian 7.7.0 amd64?

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Hope to hear from you soon.

Regards

Quek