PCB green-ecofriendly option

Im looking at using a "green-ecofriendly" board material. 862 HF and 86P HF for a radio design in 2.4 GHz.

Considering permittivity, loss tangent spec of the board (see attached) is this a good material for my application? What other parameters should I be looking at in the specs?

you need to see on dk variation wrt temp and material thickness variations.
check the same for prepreg too.