what to look for when picking out miniature?? TIPS/HELP

[PacMan]

Hey,

Well i am pretty new at this whole orchid thing. Ive been reading TONS and learns about water methods and lighting methods too and got a small list of orchids that i want to start with. I will be making a trip to pick out/pick up some new orchids for my new viv. The question is, What are some thing to look for when picking them out? Pick ones that are blooming? Just what some good general tips on picking out mini/orchids in general(if you can).

here is a list of minis that i will be looking at.
Gastrochillus calceolaris
Haraella odorata (retrocalla)
Masdevallia floribunda
Dendrobium atroviolaceum- Not to sure yet.

and maybe two or three jewels. They also have a really good selection of Dracula's, But i really not too sure which ones would do well in a viv.

its just a small list. But gotta start somewhere. So, Any tips/help would be awesome..and if you have any good info on some Dracula species that do well in vivs, dont be shy

thanks again
-James