Nice setup you got going there man!
You have a good selection of angels already. The Idols are difficult to keep so good luck. So are the multibars so keep her fat and healthy. I've got a trio and they are really cool to watch. The smallest one is a little over an inch and is great.
I got your PM, but I would get everything settled in more before adding anything else. I know its not what you want to hear, but you've got a big bioload in your 72 now and a lot of these angels need a very stable established tank to thrive in captivity and your selecting some fish that are tough to care for...
I would get your tank setup and running solid with out new additions for 6 months or so so you can see how everything goes before adding anything else. Then you can watch the market and grab what you see as the best addition. The scribbles are a sick fish but get big and can be aggressive, the Merdithi are cool as well but you really want the full male mask with a meredithi and you probably wont get it without a mate for it. I would go BlueLine. they add a lot of character and a very nice look!
Good luck man and i'll keep checking in to see how things are progressing!