I'm not personally familiar with the brand, but that depends on a lot of factors. Everyone's preferences are different. I like reverse pivot trucks, which seem to be on the Karvstix. I'm not seeing info. on the wheels and bearings. If you're new to longboarding, I would ride it as is and see what you think of it. If there's something that doesn't feel right, then swap it out.
You dont need new wheels and bearings, because you wont know what the difference between them even is. Ride what you have until you know why you need a new part. If you do not know why you are getting it, then you dont need it. If you are to get new bearings, NEVER spend extra on expensive bearings! $10 or $15 would be the most I would ever buy. One you know that cheap bearings from good brands are better than those expensive Bones bearings, then you will never buy expensive ones again. If you need new bearings get Magic, MileHighSkate, or DBS bearings for $9. They are double sealed, and work great. All bearings will spin the same as long as they are cleaned and lubed when needed. Never use WD-40 as a lube! If you ever want need wheels, look at brands such as Abec11, Nersh, Cult, Metro, Sector 9 Race Formula, Seismic, Earthwing, Venom, Gravity, and Landyachtz.
