That's a beautiful example of a DB2, I wish the body on mine was that clean (it will be one day..)
Personally, I'd take off the seat covers, my seats have gone through 19 years of people getting in and out and they're still in fantastic shape, so I don't think there's anything to worry about, so long as you take care of them like you would anything else.
14.8 is being VERY optimistic for this car down the 1/4 mile, even 15.2 is a stretch..maybe when it rolled off the showroom floor..my quickest was a 16.777 in stock form, granted our track is about 2300 ft above sea level and it was my first time ever down the strip.
And to clarify, the wheels on the GS-R are the same as the GS, the only visual cues exclusive to the DB2 are what you said, emblem and VTEC moldings.
Can't wait for some more pictures though!