Oh ok that would actually be amazing I might change my vote haha. You could have the shark and one more school or else your bottoms going to be getting crowded. then a big semi aggressive school for your higher water levels. You could do something like 1- Red Tailed Shark 6- Yoyo or Angelica's loaches or 4- pictus cats 8- Rosy Barbs 1- Bristlenose pleco There's still room for 1 more centerpiece type fish why not a semi aggressive new world cichlid. Look at firemouths they would fit in perfectly with this stock list!
Sounds like a cool tank!!! Only change I would make is on the pictus. Too often pimodella and pictus are often mislabeled and as babies they are nearly impossible to tell apart. I have a 10 inch striped pimodella (still growing) in my 150g that was given to me because a pet shop sold an unaware customer one pimodella and 5 pictus as a school of 6 pictus to max out at approximately 8 inches.... This one kept growing. Plus be it pictus or pimodella your midsized schooling loaches would be out competed for food and space. Here's another loach tank idea-
1 albino rainbow shark
5 yo yo loaches
5 panda (or skunk) loaches
10 blushing X-ray
7 blind cave tetra
2 long finned albino bristle nosed pleco
20 or so algae eating ghost shrimp
3 or 4 upside down syndontis cats
Unless you or someone who can advise you, have experience with jungle black water biotopes a discus tank may wind up being an expensive and incredibly stressful experience. If you are interested in a discus tank might I suggest starting with a couple angels to get the feel for heavily planted black water aquatics, then once you're more familiar with the ecosystem balance you could start by adding one discus at a time (you can keep the angels or try to trade them, doesn't really matter). Here's an idea for a discus tank that might be cool.
1 pair black angels
1 pair pigeon blood discus
1 pair turquoise discus
(Choose 2 pair only though)
8 oto cats
5 emerald bronchi catfish
1 mystery snail/ trapdoor snail
3 rabbit snails
5 nerita snails
A few watermelon fiddler crabs to add some humor, just make sure they have a floating betta log in case they aren't 100% aquatic (some are some aren't so I have found)
Just a couple ideas off the top of my head
my job has given the opportunity to study ornamental fish bio feedback on decorative aquaponic gardens and these are lists that have worked optimally for me and have amused my 8 year old, my 13 year old and every single person that has wondered enough to peek in, along with getting the opportunity to rescue, rehab and rehome (or keep 
