@DH3D: You're right with the lighting and plant i'm putting it elsewhere. Thx for the feedback.
About the progress on the scene I'm having a headache with my scale actually, i recently discovered that in 3dmax i had my units in meters but in the advanced options (i have never looked into it...

I don't really know how to handle the situation quite yet.
I set the scale to 1unit=1 meter inside max and i made a cube 1x1x1m to be able to scale the scene back to the good size. On the exporter i set the scale to 1.
When i imported the scene into octane the scene looked good, very good to my taste, light quality seemed better but i couldnt move the camera nowhere, only could ony change the direction i was looking in.
Someone knows the exact way to export the scene with the good scale? i've been looking into the exporter thread but i couldn't find a solution.