At first clear I go red and place 1 box if im getting leashed or 2 if not. And the remaining boxes in the proximity of chickens. After doing red I do chickens as quick as possible and then look for a lvl 2 Gank in mid, after that I decide if I can invade the enemy red or just go to my blue. Then do gromp or secure scuttle. If your first gank was successful you should have enough gold for your first back if not keep on farming and looking for gank options.

As Shaco you should always be on the look out for gank options, if there arent any then you should look for objectives (Drake or Herald).
The farming priority is Buffs->Scuttle->Krugs or Gromp->Chickens or wolfs.

When ganking and team fighting in general you should always look to do the maximum amount of damage WITHOUT diying, althouh in late game trading your life for the enemy adc is usually worth it.

Play Video Here is a video of myself playing this build.
The commentary is in Spanish, sorry.