I agree about the long tillering string. It should be 'just' long enough to get on the tips. You can get an initial bend going with an extra long one like you have there, but you have to be aware that it's trying to fake you out with inaccurate draw weight readings and stiff outer limbs. When you go to a shorter string, those outer limbs are going to show more bend.
I would shorten the string before I did anything else, making it the same length as the bow.
It looks like you're off to a good start though.