First time triming roots

[turtleamy]

Saturday I unpacked my orchid from all the sphag moss it came in, the outerroots looked pretty good, however all the inner roots were black mush. I put new moss and bark in, but after tons of reading I never saw how deep to bury the orchid. So I left just a touch of the tops roots in the air. I think after blooming is done, I'll remove it from the green inner pot it's in to a transparent one. Or is 2 repots too much in a single year?

If I somehow screwed this up how long will it take for the phal to let me know?

Last question there's some growth from the bottom, is that a new leaf?