Not too late?

Still a mystery why I received a cheque from dvla.
Anyway at least I know what went wrong in the paperwork stage. Sent all the documents back with the correct fee on a cheque.
Thinking about booking with PSTT but although I enjoy driving I’m concerned I may not to make it there within one day… And instead of 5 days away I’d be 8-9…
Found a training centre within a reasonable
distance, good pass rate, people travel there so not just locals… A bit old truck as 08 reg but auto.
Anyway if someone has 100-200 miles to travel it seems like a walking distance comparing with 650.