
I have like 30+ 3x3 stage normally, and I average 1:30
Learn Yau

When I do Redux, I have like 16 centres? With Yaudux I have like 35 centres, 20 edges, 35 3x3 stage :s (that's taking parity into account.)
Edit: Hope that answered your question

Sub 30 centres is easily good enough for sub 2. Sub 2 is easy lol.
More like sub 40 centres. Yau would be great but
the keyhole style last 4 centres is a little awkward I think.
Keyhole style? Lolwut? Centres are easy like this, it just takes a little longer.
Anyway, you could do centres exactly the same as Redux, if you setup the unsolved cross edge to be where you're turning. I think my centres are about the same, or only slightly slower than Redux centres. The thing that slows me from 16 to 35 (it's prolly more like 18 to 32 now that I think about it) is building the first 3 cross edges.
My final suggestion? Learn Yau

IMO makes 4x4 more fun, less frustrating, and also, as a result of it being more fun, I improve faster because I practise more.