Personally, I think five hours for the night qual is not enough - too much to cover in too few hours and there is commercial pressures to keep it to five hours because that it what the student will have paid for.
I'm not sure that it's too little, if there is a high degree of continuity in the 5 hours, and an opportunity to consolidate immediately after gaining the qual. My continuity has not been good, and I wouldn't feel confident at launching off on a night trip without more time with an instructor checking that I can still land safely.
My big worry is that the opportunity to consolidate the night flying looks to be very limited. The school I'm at really don't seem keen on PPL pilots flying at night without an instructor.
tp