It is almost always better to use real hard domain based links, in most cases. If you are going to redirect don't bother submitting the redirects. If it is an issue just submit the mytgp.com not /tgp.
http://www.chameleonsubmitter.com/suggest.php
7. No IP address. TGP/MGP must have a registered domain;
8. We do not accept TGPs/MGPs with sub-domains;