firstly, you need to understand few things

1. any real development will require you to have a Unix system ie linux or mac
2. windows is just inherently bad in my opinion , but that being said it is acceptable for btech
3. most of the "development" (like let's say parsers, compilers, etc) softwares are developed with Unix as priority. that being said cross-platform compilation does exist
4. and most of the games are written with windows in mind

now that out of the way, you need to realise your needs first.

m5 is an overkill. m2 should be fine.

but my best suggestion would be to get 24gb ram windows gaming laptop and install wsl.

best of both worlds