questions for a most basic portable squeezebox using PiCorePlayer and Pi Zero W

Hi;
I would like to build a very basic DIY headless portable Squeezebox with piCorePlayer using a Pi Zero W.
I will have 2 use cases:
1) At home - where it should connect to my standalone LMS
2) While traveling - where it should run with an internal LMS - only for the purpose of providing access to Internet Radio and Spotify via Michaels Spotty plugin. No further local music access is needed.

The questions I have:
- Will a Pi Zero W have enough steam to power an LMS - for the above (limited) purpose?
- A Question for the pCP-Gurus:
I want to use the most basic / cheap audio output - using PWM output and a h/w low pass filter (similar as the audio jack output on the 'bigger' Pi's - which is not available on the Pi Zero):
So, on the Pi Zero, we don't have PWM0 (pin #40) and PWM1 (pin #45) available on the PCB - which are the pins for the Audio jack on the big Pi's.
-> How can I get these PWM signals assigned to available pins on the Pi Zero using PcP?
(Since - as I understand it - Audio out is set per default to audio jack output - also on the Pi Zero)