Ubuntu 18.04 with RTX 2080Ti

i installed CUDA and cuDNN on my pc and would like to use it to start some ML projects.
i installed the following:
dirver: 410.57
CUDA: 10.01 V10.1.105

but i read that Tensorflow for GPU only works on CUDA 10.0

I have two questions:

which is the most stable and combination that can be installed in order to use

Tensorflow for GPU + Keras

CUDA 10.0 with 410.57 driver and cuDNN 7.5 or which should i use?

Can i use other cuda + cuDNN setups in virtualenvs?
how should i link the path in my virtual env?