Welcome to PPRuNE, OneDaySoon!
When we were busy formulating the NPPL, one of the things we were keen to avoid was the perception that the NPPL would invariably be achieveable after 32 hours of training. It
could be that you would be ready for your GST after 32 hours, but in reality unless you on a full-time course of instruction, you should budget for a few hours more.
Most of your questions can be answered by reference to
www.nppl.uk.com , the NPPL website. It would seem that the NPPl should meet your requirements, however, and the very best of luck with your flying future!!