Well I see that you really have done the research and have a well made viv. You also care about the animals, and dont seem to be a dummy just dumping animals in together for no good reason.

As far as dendroboard, there are a lot of legitimate scientists and zoologists over there. People who have spent their entire lives doing lab work and field research in South America. Some have literally wrote the books on darts. So, I do take their advice when I can. One thing they DO NOT tolerate is mixing frog species and morphs, as the goal with darts is to keep the gene pool in pristine condition as it is found in nature, and it has been for a long time. If you mix darts you will quickly be ostracised from the hobby.

Your frogs do sound like they are doing well. Just keep an eye on weight and humidity and you should be alright. Please give updates, especially if you start getting eggs. You can pull them or let them grow in the tank.