Alienware R13 - Hard Drive Question

Hello everyone!

I took advantage of the sale and ordered the Alienware Aurora r13 3080 32BGRam Machine (I know there are so many configurations).

It comes with a 1TB M2 2280 ssd, which isnt enough space for me ( lots of video editing and gaming).

In the user manuals it says it can take up to a 2TB M2 2280 ssd BUT I would really like to add the Acer Predator GM7000 4TB NVMe Gaming SSD as a second drive and add a 3.5 8TB Barracuda Drive.  At some point if needed I will fill the 2.5".

My questions are as follows:

1.  Can the second SSD slot fit a 4GB SSD instead of the up to 2TB listed in manual?
2. Because my R13 doesnt come with a drive in the 3.5 or 2.5 bays does it have all the power cables?
   1. The manual says contact support but they told me I cannot use those bays as it didnt come with them and I should get different model lol.

Thanks in advance for any clarity you can provide.

Savas