I went with VBP springs and parts. http://www.vbandp.com/
Many options to customize your ride to how you want it. Some options are even adjustable.
Question is...what's your budget? If you're buying a lot of stuff, most of the places will hook you up with a discounted package price.
A matched package will most likely give you the best results.
Match your springs and shocks and sway bars. As mentioned, if your shocks don't match your springs, your ride will be terrible. Any of the suppliers should be able to set you up with a nice matched setup for the style of driving you want. Most of the aftermarket front coil springs can be bought to lower the ride height while maintaining a nice ride. You can also look into adjustable coil-overs or adjsutable mono springs for the front. The rear ride height is just a matter of adjusting the leaf spring bolts.
As for steering, unless you want to throw a lot of money at it, the stock system will work great once it is refreshed and tightened up. New ball joints, tie rod ends, steering box adjustment/rebuild, replace the hydralic assist box.
Without a great 4 wheel alignment, none of this will matter though. Find a local alignment shop that has experience with C2-C3 Corvettes. If they have no experience, keep looking.
VBP also provided me a series of alignment specs for the car depending on how you're going to drive it.