Cool. Now just wait for the PROBLEMS to start. They're inevitable when you turbocharge a normally aspirated engine. Get ready to spend some big money on uprating and repairing the engine or buying a new car!
Good luck though
Well, offcourse you will be stressing the engine more. But running 6 psi is safe, even the Supercharger by TRD
runs 6 psi. And you don't actually 'boost' that much. When driving normal you actually use the turbo to compensate for the vacuum the engine makes when sucking up air. it gives as much air as the engine needs.
Compare it to breathing through a straw or using scuba-gear.
Really boosting stresses the engine more but not to the point where stuff will break. Offcourse there are no guarantees