3k is plenty of cash to get you in the game. do your self a huge favor and go to a match and see what you like. there are a million options out there: stock vs chassis, 700 vs tikka vs custom actions, short vs long barrels, heavy vs stupid heavy barrels
i shoot a defiance deviant tactical in 243 with heavy palma krieger barrel, sitting in a Manners T6A with mini chassis
PRS folks like most shooters are happy to let you see their rigs