on the intake side, I would say just save up for an ESS Tuning twinscrew supercharger. It costs a lot more, but there will be absolutely no doubt you gained power. With the intake systems, the power gains are so subtle that you might be dissappointed.
on the exhaust side, it sort of depends on what you want to spend and how much louder you want or can tolerate. i good compromise i think are the offerings from Supersprint. They are not the cheapest, but they are 100% stainless and good quality fit. At idle, they sound deeper and remain about the same sound between 2-3K RPM.. and if you kick it up over 4K RPM you'll hear an awesome sound. If you want to get really loud, but don't want to spend much, goto a muffler shop that carries Magnaflow. Find a generic Magnaflow that will fit your car and have them custom build pipes and hangers for it. This will be very cheap and if you don't mind the loudness it is great bang for the buck. Some folks have removed their Magnaflows because they later felt it was too loud or it attracted attention they didn't want.
I'm a newbie here too, but welcome!!