Don't need to go to a specialist place
Remember that your own flying club/school/instructor can help you too. His/her/their first aim was to get you the PPL so they had to stick to the syllabus. But most (all?) instructors are CPLs, all (most?) enjoy flying and have at the very least 250 hours experience (CPL requirement) - way beyond basic PPL stuff. If you give your favourite instructor a list like HFD made up, I'm sure he/she can fulfill most of the requirements, and refer you to a specialist (e.g. aerobatics) instructor for the rest.
Oh, and now that you have a PPL and are legal to carry passengers, and since these lessons are not for an official rating, you can log them as PIC anyway. Not as DUAL or SPIC.
At my flying club, among other things, they have an "Unusual Attitudes" day where, after a briefing, you go up in an aerobatics plane with an aerobatics instructor to do the advanced stalls, spins and unusual attitudes recovery. If all goes well, you progress into simple, positive g aerobatics after about 15 minutes: loops, rolls, wingovers, stall turns. The best 35 minute (!) flight I ever had!
One thing to add to the list might be basic formation flying. Still on my wish-list.