I would start with the reds as they will be easier to get hold of, reasonably priced and a good test for the tank. Can't you get some from the LFS per the photo you posted, that would be the best to start off with even if it is just a couple as you say, to get started. Also Aquatic arts have them as per your original post?
To get you started without spending a lot I would get them from the LFS even if they don't look 100% as good as you want them too and give them a few weeks to see everything is working fine with the setup! Don't forget to drip acclimate them over a few hours wherever you get them from.
Simon