you will be fine in a 125 with that community, just watch them close and if the EBJD gets bullied then remove the culprit.
I would also suggest UV sterilization. EBJD are very prone to parasites and other ailments, and i have found that UV makes a world of a difference. It will be an investment you will not regret as your whole community will stay disease free, your water will be clearer, and you will not have to resort to copper treatments that will destroy fish nervous system slowly and leave you with vegetable.
I raised and bred this EBJD back to a normal JD in a 135 gallon planted system. It is among the best looking and healthiest specimens i have ever seen on the net. Its downfall was completely my fault, as i was forced to move away (leaving the tank on an aqua medic) for an internship for the summer and its JD mate fought with him so bad he developed a bad secondary infection and was too far gone by the time i got back. Long story short i had to put him out of his misery.
Good luck
