I've got first hand experience with a JD and O mix. I got the Oscar at a very small size thinking it would be submissive even after he got bigger than the JD and blood parrot. He went from half an inch to almost 4 inches in less than three months. And was bullying the JD (who was originally about 2 inches bigger than the O) so much that the JD did nothing but hide. when it came out of hiding ,the O would chase it around and viciously nip at it. I really like my JD, so I decided to put the O up for adoption (Petco provides that service). Needless to say, oscars grow super fast and most will tend to dominate the tank in a matter of months. IMO, there are a lot of more attractive fish that will grow at a reasonable rate, leaving more room for other fish. With a 100 Gallon tank, I think the EBJD, JD, pleco and the acaras would be fine. But only if you don't mind regular water changes and have lots of filtration.
One thing about the Electric blue JD is that they are VERY fragile, and most don't live to exceed the 2 inch mark. Keep that in mind before paying lots of money for one.
If it were my tank, I would get one or two cichlids (your choice, but not an Oscar), and then get 3-6 Silver dollars. With Cichlids, you'll want some dither fish to watch while they are relaxing in their hiding places and SD's are pretty nice looking fish.
Good luck!