Congrats on your purchase. I have lots of info on that model. Manuals, tips and advice. check out www.250utv.com and you will find everything you need there.
Matt
Over torqued bolts can stretch. The next step is to break. When they break, they're nearly impossible to extract. I doubt that You'll have any trouble, but it's your call. I personally, wouldn't worry about it. But I'd be very careful when tightening.