KMG, the reason for the sliding bolts, is so that wheels from a 4x100 pcd can fit the coupe's 4x98 pcd (the measurement of the holes the bolts go through) its only a small difference but if you try to force normal bolts in you can damage stuff basically.
yes, spacers may well wear out you bearings faster than normal as well. you should go for hub-centric spacers as these will minimalise this and reduce any wobble through the steering wheel which can occur from 'universal' spacers.
spacers can also increase the track of the vehicle resulting in better handling.
do a quick google if you want to get technical, and if you look through the group buy section there was a recent group buy on H&r hub-centric spacers. im sure browsing through the thread will reveal some more answers to un-asked questions!
there are a few makes of wheels which are a direct fitmant for the coupe, and there is a thread on this somewhere in the styling section, with pics of the wheels on coupe's to give you an idea,
if you cant find it the search function is usefull!!!!,
oh, welcome to the forum and happy coupe-ing!