First off all before you go buying all this stuff you should probely need to know that donig all this to a SOHC cam civic motor is not really a good idea. If you really want to go fast you will need a new motor first. If you are intrested in learning about motor swaps just say so.
But anyway if you do want to hook up your SOHC civic motor then here it goes. Stainless Steal is much better than Ceramic for 2 reasons. One it will last longer and look nicer and two it will flow better than a ceramic header. DC sports makes great headers, as for exhaust the greddy sp or Evolution would be a good choice.
You can install the exhaust yourself as long as you can get your t old exhaust off. Depending on how rusted the bolts are to your stock exhaust that is the only real problem. There is no bending or twisting required. The exhaust is made to fit your car precisely. Me and a friend of mine put my exhaust on but we had a tourch to get the old one off.
If you have anymore questions feel free to ask.
