Well it actually depends if you want to be "active" on boards... I feel like the more inactive you are the worthless its the use of a proxy or vpn...
also, is your new account the only one you will be using? Was the account active or semi-active?
If the account you are buying its active or semi-active try to use a vpn that provides you with a location near the previous owner of that account or at least the IP it was using, then slowly try to switch to your real IP (if you live far away try to not login if a few days and then do the change)... this of course if you want to be extra safe...
I guess there was a time where TNT actually cares about this but rn I dont feel like they do...
about the second question it also depends on the pets you re thinking to move around, are the pets PC safe? are they UC? are they high-stats pets? if they're away from the PC eyes you wouldn't have any problems move them around.
I would recommed you to use just a proxy to move everything and then switch to your actual IP if this the only account you'll be using, if not try a service like
(you need an account to see links) wich as a free-service too.