Hi and welcome to the forum. While I am new to the hobby myself, let me pass on some information that I have found. I too love the look of a all Male Hap/Peacock tank, but since its a bit of a game to get the right mix, I wouldn't suggest this path unless you have some additional tanks to move fish around. Each addition of a fish to this setup can change the dynamics in the tank, sometimes you can just temporarily rehome a fish to let the tank mellow out a bit, other times it may call for a permanent rehome. Also having your decorations such that you can move them around to change up territories can be a helpful trick. I wish you the best of luck, as a all male tank can be very colorful and a wonderful display indeed.
As for obtaining stock, while you might not be ready to put fish in your tank now. It doesn't hurt to come to the auction. You can meet some of the local hobbiests and see what they are keeping/breeding. Plus the side benefit is you get to see all the cool fish.
Cadman2000
