ah that sounds cool then if you have plans for him thats all that matters
they do grow quick though usually to 12-18 inches in a year but if your prepared no point nagging
Unfamiliar with the yellow rainbows but they look nice, only comment on them is that they might prefer bigger numbers but if the LFS has run out just keep an eye out for them if you can.
The angels are going to love that tank though, they are superb angel tanks really really tall
They should grow very nice, sometimes you see angels that have been in low tanks and they always have their dorsal fin at a funny angle your should grow into stunners in that environment though
Wills