Branch A:

Stage 1: RC = 29.4ms
Stage 2: RC = 3.87ms
Stage 3: RC = 951us
Stage 4: RC = 237us
Stage 5: RC = 59.1us
Stage 6: RC = 13.3us ( NOT 1.33us, as in EN Preferred Circuits Collection!)

Branch B:

Stage 1: RC = 8.47ms
Stage 2: RC = 1.91ms
Stage 3: RC = 475us
Stage 4: RC = 118us
Stage 5: RC = 29.1us
Stage 6: RC = 3.83us

If you build opamp based filters, you don't need trimmers.
What you do instead is this:

(1) Choose a reasonably sized capacitor
(2) Measure this capacitor
(3) calculate the resistor
(4) choose a standard resistor (E24) that is slightly smaller than the
required value
(5) measure this resistor
(6) select a small series resistor to get near the exact value.

Example, for Branch A, Stage 2:

(1) chosen 220nF
(2) measured 229nF
(3) calculated 16.89kOhm
(4) chosen 16kOhm
(5) measured 15.99kOhm
(6) selected 910 Ohm

With this method, you will get a very good approximation without trimmers.
Make sure that your opamps are good enough - LF353 or TL072 are fine.