I'm installing my 7lb flywheel and stage 2 clutch tomarrow. I wouldn't get your flywheel lightened. Only because Honda made it 18lbs, they didn't make it 7lbs for a reason. If you are removing material from an existing part (flywheel in this case) you are taking away from its stability. Buy a lightened flywheel that is already meant to be 8-9lbs. Just my opinion though.
If you want to start getting ready for turbo and want to get some power gains now, here's what you can do (also happens to be what I'm doing right now): Get your top end done. Meaning, take off you head (if you don't know how to do this, buy a Hanes or Chilton manual, it'll walk you through, and have a friend who has done it before handy) and send it to a machine shop to have it ported, polished, and get a valve job. You'll need a 3-angle valve job done on the intake side (5-angle isn't needed, and sometimes isn't as good for intake) and a full radius valve job on the exhaust (full radius is best for exhaust because of the way the exhaust gasses flow, but I won't get into the physics of it here). Now, make sure that your head is straight, if it isn't, you'll need to get it milled (cheap, very cheap), but not too much! Just enough to straighten it. An more, you'll be raising compression, which is good for more power, but bad for tubo applications.
Next, get your intake manifold ported and matched to your head. Get a 68mm or 70mm throttle body. You'll need some injectors too. RC 450cc injectors would be great, because when you get your turbo, you'll have enough fuel to go with all that air (too much air + not enough fuel = lean mixture = blown motor = bad).
Port and Polish + Valve Job + Mill = about $600 - $900, depending on the machine shop.
Port matched Intake = About $100 - $150
Injectors = $250 - $300
Throttle Body = $250 - $350
All these things can be done at different times, and are great for turbo applications. Valve train might be your next project, so you can put some monster cams in there. With these things that I've discussed, you'd be looking at at LEAST 50 horsepower at the wheels. Huge jump for a car with about 100-110. You'll be running with ITR's in no time!