installing on a Asus X552M laptop questions

Hi.

I have an Asus X552M laptop.
Video card: 2, Intel(R) HD Graphics and Nvidia GeForce 820M.
RAM: 4 GB.
HDD: 500 GB (GPT)
OS is Windows 8.1 x64 (UEFI) on a 100 GB NTFS partition.

I want to install the Knoppix 7.4.2 DVD on the internal HDD.
I know how to repartition to add a Reiser-FS and a swap partition.

2 questions:

1. Is there any way to install keeping GPT/EFI and having dual-boot Windows 8.1?
2. Is there any way to install a good video driver so I can have video acceleration?

Thank you.

Best regards,
Cosmin