Hi Paul,
With regards to your questions, I'll put it this way:
The IPS TAG is: ENOM. Although the TAG should only be changed if the domain is .uk domain. For a .com domain, you'll need to obtain the EPP key from your current registrar.
Once your order is processed, you will receive a welcome email that includes details for your
web hosting account, DNS settings, Mail Servers etc.
Static IP can be ordered while sign up process.
The domain transfer will be initiated at the same time. The transfer process generally takes a couple of days to complete.
I hope all the above information helps and if you have any other questions, please feel free to ask. Thanks!