Hi all any advice on harvesting time? First time g...

Definitely not ready yet considering the photos. Still much of white pistils on bottom areas of the buds, but it will be mandatory to buy a microscope to check the trichomes on a macro approach. Only by the microscope view you will see the trichomes development and mainly when you find on your buds a bigger number of "milky" trichomes (normally the trichomes on early stages are cristal clear and when the maturing happens they turn from cristal type to milky type - the clear trichomes become opaque and the perfect time to harvest normally is when you have most of the trichomes milky and some of them become like ambar). So...by the macro view such as shown on the photos, you only have on your buds the top matured but most of the bud is still very immature (white pistils on most of the bud structure)...and once again, buy a microscope 'cause only with the microscope you'll be able to verify the maturing point necessary to harvest your grow. 420 Forever.