ESIM using silent.link = a phone line that can only be used to receive messages and calls no outbound calls allowed. However you need a phone with esim support.
Physical sim on another device: great but you need a seperate hardware and have something extra to carry and charge.
Physical sim on a dual sim phone. Easier to carry however it runs the battery faster and sometimes you can forget which sim you are on if you are quickly calling or texting.
Mains sim plus VoIP line example is mysudo- use one phone, seperate your communication between your actual number and an app with VoIP. Seperate phones # via software since VoIP is all on app side. Requires you have an internet connection to work properly. Not all services are happy using VoIP and stop you from registering or changing numbers to VoIP.
Lots to think about, best of luck.
Its a pretty dependent question.
Depending on your hardware, I’d say if you consider compatibility first.
Touchscreen is something you mentioned, I’ve used lenovo laptops that have built in touchscreen that work well on fedora.
They want something close to windows then I say Linux mint.
I have used Linux mint with various ages past 2 years. Very on levels from beginner to complete non tech users. On those that need compatibility with various applications close to windows. Regular Linux mint
On users that just require basic internet and document usage (aka a word like application) Linux mint debian edition (why? Less complicated, for non tech savy people). Less configuration means lower chances of issues popping up.
TLDR base your decision on peoples needs, and your ability to assist with what they have. Right tool for the job. Hope this helps.