Welcome aboard!! I hope you and the group enjoy Kalisz and all the chaos, mayhem and bloodshed that T2K can bring
Like the rest of the gang on here I'd limit them to one PC each to start with. My group has been playing together for about 10 years, and some of us have heading for 30 years gaming experience and we'd still mostly stick to one character each. Only time we would double up is if someone was missing and we needed their character played by some one else for a session.
Once again, welcome to the group, enjoy it here and take advantage of the info, tips, knowledge etc that everyone can provide - I know I do