New service install coax distance question

Building a new house and we are scheduled to move in early January. Xfinity is available at the street and my home is ~250' from the street. I'm installing 2" PVC conduit with a pull string. I need to know if Xfinity will pull the RG11 or RG6 through the conduit or should I? Is 250' near the limit of coax to provide reliable internet and CATV? Thanks