Consider working in stages of two and compensate/compliment one with another.
Upgrading the turbo? Go ahead and do your headers/exhaust as well to keep up with the increased pressure in the block.
Upgrading the intake system? Do the fuel injection as well to keep a good air/fuel ratio.
Also, by what you've got listed here it doesn't look like you've put much thought into the ride or sustainability of your engine. Ensure that as you're putting more and more pressure and stress on the block that you're taking the time and money to beef up any gaskets affected. If you're wanting to push 200+ horsepower you may also want to upgrade the suspension and/or braking system for safety reasons. If you can go faster then chances are you will, and if you're taking that 90 degree turn at 70 mph you'll want better suspension, or if you decide to see how quickly your new hardware and tune can get you from 0 to 60 but someone pulls out right in front of you, you'll probably want higher quality brakes to slow you quicker, more safely, and more effectively.
**Note: Always be respectful of yourself and all of the other drivers on the road, whether tuning or not - don't put lives in jeopardy for a "good ride." Don't be wreckless and irresponsible, make sure that whatever you're doing, do it safely. Pay attention to local road conditions, traffic laws, and be mindful of others on the road.