Hi, and welcome to the list of "posters".
NPPL - there are two schools of thought on this. Some for, some agin, for a whole raft of reasons.
From what you say, the NPPL will probably meet your flying needs for a while, at least. if you decide later that you need to "upgrade" to a full PPL, you have the option to do that, although how many of your NPPL training hours will count is another matter.
You'll be doing very well to complete the NPPL in the minimum hours. You should probably plan on something more like 40 hours, depending on how well you take to it.
I did my PPL back in the dark ages when the "minimum" was 35 hours. I spread it over 2 years and took 44 hours. If I'd done it in an intensive course over a couple of weeks, I might just have got away with 35 (but I doubt it).
Some schools don't like it because they make less money out of you. 'Nuff said.