Forget the US GP, why not hit Montreal? Buy GA tickets, bring in a cooler and some grub and you are good to go!
I love Austin but Montreal has the whole GP weekend down
GENERAL ADMISSION 3 days $123.00
GENERAL ADMISSION Friday $42.50
GENERAL ADMISSION Saturday $67.75
GENERAL ADMISSION Sunday $93.00
Tickets - Grand Prix du Canada - Formula 1 Montreal | Circuit Gilles-Villeneuve