Both are good, however 3D modeling often requires more GPU than CPU, at least in renders. The difference is small so don’t bother, I recommend getting the better GPU as the CPU tends to get old slower than the GPU.

No. The laptop is made to discharge at that and higher wattages and the phone to charge at that wattage but no more, don’t worry however, the laptop and phone communicate for wattage, and if they can’t it’ll charge it slow (5W)

Yeah. No problem However, charge it to 80% and keep it within that and 20%, don’t charge it when it’s overheated, batteries perform worse in high temperatures. Don’t charge overnight. Now this is more of a debated tip but still, not a good idea, a laptop probably doesn’t have the same battery controller technology as a phone, so less protection.

Any laptop that you do maintenance on every 6-12 months. You may not get good life time with Windows, but Linux will keep it running for even 20 years. Some say HP sucks. Keep that in mind

You don’t need a fancy laptop at all. Get Linux, it has windows app support and LibreOffice, a very good Office alternative has word, powerpoint, excel, etc. You don’t need to worry about drivers, they install themselves and din get uninstalled. Touchpad drivers aren’t an issue, most drivers are built-in anyway and work very well. For someone that doesn’t want to mess around too much with configs, Zorin OS works wonders, to get Windows App support you run the app from the start menu and it installs all you need. If your laptop of choice has over 6GB and a quad core or better CPU at 2GHz or more choose Zorin. If it has less than any of these, get Zorin Lite, it’s the same mostly but runs faster.