New Tank Cycling

Hi Thor .. I left the tank as it is and did a few tests last night.

Ammonia : 0
Nitrite : 0
Nitrate : 40 (dark orange)
Ph : 8

I'll do a test for the water hardness tonight..

How do i go about it now ? Do i continue to put fish food to feed the ammonia and nitrite bacteria or am i ok to get the Cherry Shrimp for the tank ? I read in one of your posts that you should not keep the tank at 0 ammonia and nitrite for too long or else the bacteria will start to die off.

Thanks,
Dean