Stocking 75gal W/ Tetras, German Blue Ram, And Discus

[Kalawix]

Hello Fishlore Forum,
I have been fish keeping for around 4-5 years now. Mostly maintaining a 20 gal with some beginner fish like tetras, mollies, etc.
Currently I have gotten a 75 gal tank, I would like to devote more time to my fish hobby. I have spent weeks skimming through youtube videos and forums about Discus and German Blue Ram. I'm still in the process of cleaning and prepping the tank before even getting fish.
I would like to purchase Discus and especially German blue rams, and add my Cardinal tetras and possibly Corydoras bottom feeders. Truthfully I'm not sure about the numbers for each and have a decent idea on compatibility. I wanted to get an honest opinion from other fish experts and Hobbyists about whether these species would work together as well how many approx to get of each.
Any tips or hints, or advice is welcome.

 

[75g Discus Tank]

I’d go with 5 discus, 12 cardinals, a pair of GBRs, and 8 SterbaI corydoras.

 

[Kalawix]

Thank you very much for your advice. Greatly appreciated

 

[Bradley Moles]

3 to 4 discus for this size tank(make sure to put stock them at the same time and try to get ones close to the same size) around 6 corys(they like the same exact species rather than a few speckleds with a few pandas..etc. kuhlI loaches are awesome too if that’s your style. Also check into bolivian rams(little bigger and more hardy) and I have ahd great luck with my electric blue rams that came with the tank but I have no idea where the guy got them. Can get an angel or two if you want also(they usually but not always work)