PC configuration, preparations & precautions when running nmap pen test

If I'm running a pen test using nmap via public Internet to 12 IPs at a time

a) what's the PC configuration recommended?  
    64bit CPU ?  Is Thinkpad X201 good enough?
    How much RAM?
    Good to have SSD for faster scan?

b) For nmap Ver 7.25, can Win XP  SP3  or  Windows 7 Professional (32 or 64bit)
     be used?

c) do we need to pre-install with WinPCcap & MS C++ before installing nmap?
    which of the two to install 1st?

d) do we need to disable AV (I have McAfee), antimalware ( the other PC on
      Malwarebytes) , "data loss prevention" (Code Green) & Windows Firewall
      to stop any possible 'blocks' by these tools?

e) if we were to stop any AV or antimalware indicated in item d above, is
     there a risk of the laptop getting infected during the scan & possibly
     this infection move on to the target IPs being scanned?  If so, do we
     still leave the AV/AM alone (ie running) on the laptop?   Is it crucial
     that the Windows laptop is patched to the latest in case it get
     attacked during the scan or I just have to take precaution not to
     browse any website nor run any other software (other than the
     scanner) during the scan & I should be quite safe even without
     up-to-date patches on the laptop?

f) attached is a list of scripts that comes with the nmap 7.25 installer.
    Are they complete & up-to-date so much so that I could run
    "--script all" (& certainly with -T4 so as not to affect production service)?
nmscr.txt