Probably, you could use qemu - virtual machine on *BSD.
Inside it, you could simply run LiveCD Linux, for example Kali-Linux. Thereafter, you might mount host / or / visit torproject.org to fetch fresh TorBrowser. Unzip it,... launch,... voila!
Otherwise, your profile will be highly divided from major mass of TorBrowser's users.
Even, full-screen - is ...