I don't often post in "stocking plan" threads, but since I'm on a "precise and accurate writing" kick, I figured I'd hop in and add a useless post to my count

.
I avoid the use of the word "happy" or any other personifiers as much as possible. My aquaria aren't Disney movies, and frankly I have no way to tell what my fish are emoting. Keep your fish healthy and with suitable (i.e. compatible) tank mates, that's the best you can do.
I should add (so that it doesn't sound like I'm flaming Winterwind, I'm not) that I understand the basis of Winterwind's post. Fish tend to behave more naturally and be more active with females around (so do people

). However, there is no such requirement to keep the fish healthy and lively, just make sure that there are several males so that one doesn't become the goat and they'll be fine.
Your second stocking list looks appropriate. Yes, Otos will scavenge to some extent, but providing them with a little blanched cucumber or veggies will help them. Take a thin slice of cucumber, place it in a bowl with plenty of water and microwave it for about 5 minutes. I've heard upwards of 10 minutes, but this seems overkill. Perhaps if you were doing several slices for several tanks. Anyway, be very careful because it will be incredibly hot. Let the bowl cool to room temperature and drop in the cucumber. You may opt to do this at the same time as your main feeding so that the gourami and guppies ignore the cucumber. They probably will anyway, but they might hover around it out of curiosity and keep the Otos away. Keep an eye on it and if it starts to mold, take it out. Sometimes it will take a few tries for the Otos to recognise it as food.