60's Console Retrofit

Before I deep dive into Volumio, is this realistic?

I have an older console (AM/FM/SW + Record Player), this thing is from the 60’s. Beautiful but the radio Tuner and amp are shot. I want to replace the radio tuner assembly with a wide but short touch screen with Volumio + PI possibly. I don’t see a need for Radio as I have poor reception where I’m located anyway. So OK to lose (aerial radio)

So can I:
a) Add a tactile knob/encoder for volume control. Maybe another for track selection / play/pause.
b) typical Audio inputs (RCA / 3.5mm) for Phono and maybe 1 extra for ???
c) Pipe this out to a simple amplifier I have already. (prefer wired but my AMP is BT enabled)
d) bonus if I can bring in some internet radio.

I primarily just want to use spotify and play records.

yes you can.
a) Add a rotary encoder
b) You can add one input with for example the Hifiberry DAC+ ADC Audio Board. (never tested as phone pre-amp though)
c) You can use the RCA out of the same board as input for the Amplifier
d) Internet radio is part of Volumio.