^as someone who was very close to going T-4 I can tell you this bolt on is a fantastic route to go GIVEN it is reliable.
Looking through your mods you don't want or need anymore power than this turbo can offer.
T-4 can seem cheap but once you buy everything from the turbo, mani, WG, intake, oil lines, etc it really really adds up. I had all intentions but couldn't do it as i've been waiting for a cheaper bolt on like this that driftmotion has been working on. I even had a t4 mani and WG bought. Had them nearly a year and i just sold them a couple weeks ago.