Taka was my first main in this game. The first hero I save my in game money for. I've learn though many fights against taka what to build and how to build a taka. My taka build does lots of damage and also allowing you to spam you abilities.
Clock work is good because if your about to die you box will come up faster than it normally would. this allows you to get out of fights if your low or ganking or taking the jungle to yourself.
kaiten helps you dodge or protects you from auto attacks or skill shoots. This also helps you get close to the enemies cause the to have a trouble time to get away from you.
X-Retsu can be use good for early game damage, late game jump ins for team fights, or my favorite stealing kraken.
Lastly Taka's passive now Taka's passive give him a chance to gain movement speed so that is why i don't think you need boots for taka. another thing is if you stutter step with allows you to stay close to the enemies or worse comes to worse use your abilities because your damage not burst.
Now your wondering why I have a thing called defense. Now i cant really tell you want to build because it depends on what the other team has. For example burst or damage or both. So for that item i can't really tell you because it's all depends on who you vs.
Now that is my Taka build. I hope it is useful and hopeful this info will help you.