Need Upgrade Advice

Hello. I have recently bought a '94 integra ls. It is completely stock and want to know what are some good somewhat easy things to upgrade on this car.

Some things I want to do are:
Wheels, suspension, tint
This is mostly for looks and some handling

What are some good things to upgrade for performance?

Also, this car has 170k miles on it. Is this going to affect anything when upgrading performancewise?

Thanks