Monitors, subs, amp, DVD, etc...

Hooboy, where do I start?

Okay, I'm not much for tech stuff, so I dunno what to do!

I would like to install, or rather HAVE installed, an indash monitor(dvd player included if possible, saw a Panasonic, if not, a separate dvd), couple screens in my headrests, stick a PS2 or other video game console in 'er, get some new subs and a new amp. I have a 2000 Civic EX. I currently have an 801 series Panasonic deck, some el cheapo subs and a cheapie amp.

Here's my dilemma: I live in a pretty small town (Idaho Falls, Idaho) and I kinda question anyone's capability to install this kinda stuff....what I mean to say is, I don't know that there would be any experienced people around. About all I got to work with is a Circuit City. I've considered goin to Salt Lake City, which isn't too far off, to have this done, but I dunno. If I ever have any problems I don't wanna hafta go back down there necessarily. Additionally, if I want products that THEY don't carry installed, they're gonna charge me up the ying-yang(did I just say that?), and I don't particularly...gahh!! I'm just not sure where to start. I'm uncertain what brand names are better than others, and I'm aware a lot of that is individual taste and opinion, but.... Honestly I've never done much with too much stereo/entertainment systems in cars, but I love to learn, I just don't have much to work with in my area. I don't know where to go. LOL

Additionally, another concern is that I'm having my interior reupholstered with grey and red soon, as far as the monitors in the headrests would I do well to have the upholstery done first, or does it matter? That's all I can really think of for the moment, it's wayyyyyyy too late right now(or early, depending on how you look at it).

Thanks for any advice you can offer!!