okay gotcha, those guages are cool. i know those are off a different car, but see if you can get ones that don't have "Si" or "Type-R" or anything like that on them, cause you'll get a lot of shit for that too. i don't think that any of them come with a black face, but i might be wrong about that. look around for reverse indiglo guages, you might find something there.
oh and for your rims question, don't get anything wider than 7", cause it won't fit. well it will, but you won't be able to turn! coil overs, Ground Control sleeves are still one of the best options, but Skunk 2 also has a devoted following. GC runs about $300-$350 a set depending on where you get them from, i have no idea how much the Skunk 2 are. there's a few other sleeve kits out there, but those are the two that i know about. Full coil overs, i'm not the one to talk to about because i never looked into those.
one of my friends has GC coil overs on his integra, and he really likes them. i forget which shocks he has, but it rides pretty well. thing is that he's only adjusted his height like once, and he really didn't need to do that. if you get a good set of springs, it'll be a bit cheaper, and unless you absolutely have to have the adjustability, it'll be better for you in the end than a sleeve set. i've got H&R Sports on my civic, drop was close to 1.8" or so. rides almost like stock, and handling is much, much firmer. those cost me like $150 for the set, and i've got them paired with KYB GR-II shocks, which were like $200 for the set. shocks are up to you, but if you look into springs, i'd say stay away from anything that isn't an H&R Sports.
anyway back to the rims, i'd say go with either a 15" or 16" rim, depending on how big you want them. 15" has been the norm for a few years now, everyone seems to be steering away from the 17" and 18" rims because they're too damn heavy (tires are also expensive as hell for those size rims). if you want aftermarket, Konig and Rota have some really good choices, it just depends on what design you want. Enkeis are also really good, but can be pretty expensive, and stay away from Motegi. if you just want rims but don't necessarily need aftermarket, you can't go wrong with a good set of GSR rims. if you can find the '96 model (six spokes with the big lug cover), those only weigh like 15.6 lbs each, making them the lightest of the GSR rims (i think the '94-'95 "Fat Fives" are next, something like 16 lbs each). GSR rims with tires for for between $250-$600, just depends on which design, and who you're getting them from. if you want an idea of what the different GSR rims look like on various civic bodies, just search through the member galleries, lots of civic guys on here rock the GSRs.
do you have any plans for the engine? stereo? neon lights even? just ask around dude, there's lots of people on here who can help you with just about anything.