16" laptop too big?

The value for money in laptops is in used business laptops (costing £75 to £250ish). Or even better, free laptops.
What sort of physical build are you, and how much walking and public transport use will you have with your laptop?
How much maths work do you think you'll do as an economics student? Maths work that isn't done in a spreadsheet or database?
How much programming?
Pen and paper still works fine in 2024 for the sort of stuff that's not easily done on a standard laptop.
You'll do loads of essays, which is where premium business laptops come in with their better keyboards than consumer grade laptops.

hi, I'm currently looking for 2-in-1 laptops for uni. I've narrowed down my options to about 4, 3 of which are Lenovos (specifically Lenovo yoga 7(i)s). The most viable option has the best processor, suitable/nicest resolution (1920x1200p) but has an IPS screen type, best battery life, cheapest etc, but it is unfortunately 16" and weights 2.1kg. Is this genuinely an unbearable size to bring for uni?
My other option is similair, just a weaker resolution (1920x1080p) and battery life, but with an OLED screen type and is 14", same processor, & more expensive. Does this seem like a better option?
My main concerns are with the worser resolution, I know that with this Lenovo model the pixels arent as strong, so i'd benefit more with a stronger resolution. Also the 16" laptop is cheaper than the 14" by £250 (16" laptop is £899 on sale whereas 14" is £1149).
For context I'm studying economics and want a 2-in-1 to have an easy and good balance between work for maths, essay writing and programming. Resolution isnt the MOST important obvi but it'd be nice not having to squint or zoom in every second. Any advice would be much appreciated!

I’m a CS student and went for a 14” laptop. The 16” was just too big although it fit in my Nike backpack it was tight and considering that I’m commuting in London to uni I didn’t want my bag to be too heavy. Resolution wise both of those laptops resolution are so similar and if anything the 14” will look better as it’s OLED but also because it’s a very similar amount of pixels packed into a smaller screen. The 200 pixels more on the 16” won’t make much difference as it’s a bigger screen. If cost is important the 16” will do the job great but personally I’d prefer the smaller more portable one. It’s personal preference some people prefer the bigger screen.