At that mileage, and that comp test result, I would look into a refresh of the engine before you begin to think about increasing the intake charge (personal opinion). Your typical ka24de comp test results are higher than that. Did you comp test it correctly?
At those power levels, you can look at a bottom mount t28 setup, which would simplify things. You can run that on the factory internal gate pressure with 370's and have a pretty fun streetable car. The chinese turbos are a hit or miss, typically a miss, and will cause you more headache down the road.
diyautotune for the MS.
https://www.diyautotune.com/product/...-manual-trans/
The whole setup definitely depends on what you intend to do with the car, and how you want to progress with it. Don't overbuild it too quickly.