As long as your internals are in good working shape, you won't have any probs with the turbo upgrade. Just remember that as a rule you don't want to exceed 50% total engine output on the stock internals (i.e. adding more than 100hp to a 200hp engine). Going above that you'll likely start breaking things or blowing seals.
F22B Prelude is right. Make sure you have a good timing belt and balance-shaft belt. With the pressures you'll be putting on your engine, a lot could be damaged if one of those break.
Well if you're buying a kit, make sure it comes with everything you'll need. You said that you won't be doing the work yourself, but surely you don't want the car sitting at a shop somewhere, all in pieces, waiting for a part to arrive.
Just a friendly reminder here (I've seen this overlooked quite a few times with turbocharged cars). You'll want to go pretty big with your exhaust pipe to really get the exhaust freed up. I know that there's limited space, and I'm not saying that you should go get this large of pipe, but when I researched the T3/T4 Turbonetics that I'll be installing on mine they suggested 3 1/2" exhaust pipe. The stock pipes (and a good many aftermarket ones too, I might add) are designed to give a fairly free-flowing exhaust while still maintaining some backpressure. That's great for normally aspirated vehicles, but a turbo does not require backpressure (in fact it hurts the efficiency of the turbo). The faster you can get the exhaust gasses away from the turbo, the better. And don't forget the colder plugs...