Yes, those will work.

For (8) you probably don't need 6' long, 3' should be long enough.

For (5) this seems like the wrong cable and way too short if you're buying two speakers. For that mixer you should use 6.5mm to 6.5mm

https://www.amazon.com/Elebase-Instrument-Interconnect-Compatible-Amplifier/dp/B08L4TZQ5X