Running Virtual Box in Apple MacBook Air M1

Hi,

I am a software developer, I do cross compilation of kernel source codes. I use Virtual Box and run Ubuntu OS.

I am planning to buy Apple Macbook Air M1 (2020) 8Gb RAM & 512GB SSD. Is this fine?

or Should I go for base variant, 7Core GPU and 8Gb RAM variant?

I see no use of GPU for me.. Please suggest a good configuration for me.. Should I consider 13'' MBP as well?