>>1716713as anon said, the distance isn't too much of a problem, but getting your fit dialed into your bike takes a lot of finessing. hell, I've had my current bike for maybe 8yrs and just recently got it right because I was being retarded (came from mtb background and tried to make my roadie feel like one -- bad idea)
saddle is super tricky and your ass bones need to harden up before you actually see any benefits to a proper saddle anyway.
stock saddles are known to be trash but you could get lucky. the point is they're like shoes, if they don't fit then after a bit of use they become uncomfortable. distance between center of assbones (sit and rock on corrugated cardboard) plus extra due to stance (the more bent-over forwards /aero you are, the less extra. fully upright is I think +4cm)
your assbones press into the wide part of the saddle and it supports you like a perch. plus, there's fore-and-aft position, stem reach, saddle height (probably single most important, actually) . it takes a while to dial it in and especially as a noob you don't have a previous good fit to compare it to.
but depending on your fitness and native ability to estimate fit, you could be good to go after a test ride, it really depends on the individual.
