Book whatever you can now as long as refundable
For airlines, try and use freq flyer miles or if using $ at least buy on an airline you fly frequently so can re-use the dollars for another flight
Hotels are really expensive for Sat and Sun night - $750+ even for dumps if there is even any availability. After each round of playoff games, check the hotels as fans of losing teams who had tentative hotel reservations will be cancelling them
I am a season ticket holder so hoping to get from lottery but even then not sure would go
a) face value is a few grand
b) the opportunity cost of not selling them
c) all of the other travel time and expenses
On the other hand... the chance to see a super bowl win ...