Is the 1600 x 900 screen good enough?

It is fine for documents, email and video, but text and photos look less sharp than on a full-HD 17-inch laptop. If you edit photos or watch a lot of video, a sharper panel is worth considering.

Can I upgrade the RAM and storage?

HP lists support for up to 64 GB of RAM, so you can add memory later. The 2 TB drive is already large, and many 17-inch HP models allow a drive swap.

Only light and older titles. It uses Intel integrated graphics, so modern games will need low settings, and serious gaming needs a laptop with a dedicated GPU.

What does the docking set include?

It bundles a dock so you can connect a monitor, keyboard and mouse through one cable. Check the dock's port list for the displays you plan to use.

Is it too heavy to carry daily?

At 4.7 lb it is on the heavy side for a commuter bag. It suits moving between rooms or occasional trips more than daily carrying.

Does the touchscreen work with a stylus?

It supports finger touch, which is handy for scrolling and tapping. Pen support depends on the specific model, so confirm before relying on it for drawing.