I did the full job on my civic. Took about a week and a few days. Although I changed carpet and roof (including sunroof = huge *****). I used paint from Napa, total cost of paint @ $9 per bottle was around $140 max. The carpet from accmats.com was $130, and the roof material was inexpensive, I am drawing a blank on the material I used.

I ripped out EVERYTHING: Entire dash, entire sunroof setup, seatbelts (Which I painted).... It's quite the job, but its really quite fun.

You can handle the job, make sure you get the proper advice before jumping into it. I would not reccomend getting the parts from honda. You'll spend close to $1000