For the time being, 8GB is good enough for his usage. But I recommend going for 16GB, especially if he will use the laptop for many years and NOT upgrade it in 2 to 3 years. That extra money for that RAM is totally worthy, imho.
And then, we have the NEW greedy creepy M$, which keeps on including bloat + Ads + spyware in the new windows updates. They will make sure that 8GB RAM will feel like 4GB RAM in coming updates.
Backlit KB is good to have. (must have for me)
15.6" screen with extra Num-Pad will be good, if he uses excel extensively.
Option of USB Type-C charging is preferable (along with prop. charging is also very good).
Prefer 16GB RAM and At least one slot of RAM up-gradable, but it is very rare nowadays.
Privacy shutter for the Camera, which is commonly available now.
Option of upgrading SSD - very rare now.
SD slot, Number of USB 3.2 ports min 2 & Type C with charging (as I said earlier)
Most laptops come with MS office life time, which is useful in your case
Buy extended warranty, if he travels a lot.
Last year I bought a laptop with all the above features for just below 50k offline after all offers and cashbacks. Now it must be available around 40k during upcoming sale, may be with some upgradable options removed.
All the best bro