How Fresh install of Windows 10 2019 LTSC from Windows 10 S Mode? (for mom)

[Dexterous Fox]

I'm buying my mom a lenovo laptop. Her usage is basic office stuff, emails, surfing void that is google, & the majority of its life will be unused. I've narrow down to two models.

From Best Buy, IdeaPad 3 15.6'' Ryzen 3 for $399.99 with Windows 10 S mode. From Lenovo, IdeaPad 5 15'' ryzen 5 for $572 with standard Windows 10. There's very little difference between models & the thing only that matters is the display brightness. The Best Buy one has 250 nits vs the Lenovo has 300nits & both seems to have IPS displays. 

 

On both, I'm going to do a fresh install of windows 10 2019 ltsc. Only the S mode is holding me back from getting the Best Buy. I have very little experience dealing with S mode laptops & the only one I've attempted to do a fresh install of Windows made it impossible to do it. To this day, it was the only computer I wasn't able to do a fresh install of windows.

 

I know it's a lot to ask but I would like to have an answer within an hour.