Shall I harvest in 2 weeks ?

Its really up to you and the kind of high you want. The more amber you have the more sedative the high will be. THC turns to CBN. On the other hand, more clear gives a racier high. Sativa, indica at the end of the day doesn't mater if you grow your own. You should grow for the high you like or want. Feed and water to the end. Proper curing before smoking will breakdown any chlorophyll and heavy elements in the bud. flushing only serves to strip nutrients from the plant when it needs it most. It can decrease cannabinoid yield by up to 30%, just by flushing for the last week or two. One of those growing urban myths....I hope this helps, good luck and happy growing