The local Molly's are barely 2" long, too small I believe, if they were 3"+ I'd try them.. I did try some danios in a 40B with a few festae grow outs last summer, the danios were longer than the festae but were all killed within a week $60.. The 180g may make a difference. I like the ideas of live bearers due to the possible extra little food source. Gourami hadn't even touched my radar.. I'll keep looking!
Oh.. and since I removed the SD's the RTM hides most of the time... rest of the fish are out and about, she is the only one that is nervous. I'll give her time, its only been 4 days.