I think there are plenty of other choices besides USS Pennsylvania. You have the USS Independence, USS Washington, USS Franklin, USS Columbus, USS Delaware, USS Ohio, and USS North Carolina. All rated between 74 and 90 guns. All carrying a variety of long and medium 32-pounders, 32-pounder carronades, and 42-pounders. If they are built anywhere close to as sturdy as the United States class frigates they'll be pretty stout. As far as first rates go, several were laid down but only the USS Pennsylvania was ever completed and she was obsolete by the time she sailed. She made only one short voyage and then sat in Norfolk for 23 years until burned to prevent the Confederacy from capturing her. If she'd been completed on time she'd have truly been a wonder and probably more than a match for any other 1st rate out there but even then she'd sit on the very edge of this game's time period. Its debatable as to which side of that edge she'd be on.