So you don’t worry, I won’t tell you to get huge or anything since that obviously isn’t your goal, even if it’s rather frightening that you and I weigh the same and you’re half a foot taller than I am…
From your list of hobbies and goals it looks like you should check out beastskills.com. There are various bodyweight training articles (such as the handstand pushup and a crazy no hands one arm chin up) and plenty of tutorials on how to set up/perform gymnastic style techniques such as the iron cross. I would also avoid Matt Furey workouts as many of his statements clash with common strength training knowledge and can be potentially dangerous.
For most bodyweight exercises, you can take a common exercise such as a pushup and make it harder to complete by either adding some kind of resistance (think backpack full of water bottles) or by decreasing your mechanical advantages (feet elevated, one arm/one leg, etc.) Dips are also excellent bodyweight or improvised weight exercises. For sport specifics, I would suggest trying some speed-strength squats to help in your martial arts/parkour.
If there are any farms or dirt fields near you, these are always a good source of large rocks to lift/throw/carry/whatever else you want. If you want to try some improvised weights, I used a metal bar ripped off a shelf, some rope, and any heavy object I could tie up as a barbell for about a year, it worked pretty well actually.
Also for sport specifics, don’t neglect dynamic flexability. I cannot stress how much more power you can place into your strikes (particularly kicks) when you improve dynamic flexability. I’m really not sure what the extent of parkour is but I assume you need good dynamic flexability there as well.
You might also want to put some effort into working your shins. This can soften your landing after a jump and decrease your “down time” between jumps/flips/tricks etc. This also helps prevent ankle injuries which totally ruin your day, week, and probably month as well.
If you check out the titanium ankles video at dogentricks.com you should get a good idea of what I mean.
For your supps I really can’t give you much help as I tend to not use much. If I recall correctly, the L-glutamine should help you the most but I’d suggest getting a second opinion on that. Protein powders and MRPs are going to be your best friend since the increased level of activity will cause you to get hungrier more often and I doubt you’ll want to prepare enough whole meals to suit your needs.
I suppose that’s all I have for now, if you have some questions, just ask. I was in your position a while back mixing TKD with tricking (martial arts mixed with gymnastics and a catchy name) with no weights so I get where you’re coming from.