Hello, new here and amazed, and need your help

[i_learn]

Well, I am Derek and am 16 years old, I have completed my 4th grade piano and 5th grade theory from ABRSM. I left piano a year back as I had to concentrate on my academics but now I can't stand the distance from music and piano !! Anyways, I wanted some clarifications on the following books I am about buy:
1.Paul Hindemith' Elementary Training for musicians: is there a better book out there on the same lines, having more exercises ( I don't need theory of music).
2.Mastering the scales and arpeggios from Cooke or Scale and Arpeggio Manual by Macfarren.
3.Czerny's School of Velocity or Finger Dexterity ( both seem to have the nearly the same pattern and thus would buy the former ...Am i right)
4.Is Czerny's 125 Exercises in Passage Playing a good buy?
5.Is Bach Chorale a nice book to start of for sight reading?
6.Is it the right time to start of with Liszt's Technical Exercises ( abridged version)?
Thanking you in anticipation.