in about 10 days i will be driving my '94 corolla from south FL to CA... thats ~2800 miles

i want to know what all i need to get checked before the drive
currently the car has 115K miles and i have taken good care of the car (i was the 2nd owner) its been well maintained :
oil change done (2k of 3k miles left before next oil change)
new tires (< 8 months old)
new brake pads with rotors machined (2 days back)
radiator flush (2 days back)
also a/c is ice cold
however when i got the brake pads done the mechanic said that my catalytic converter was leaking exhaust coz it was rotted and give me an estimate of 300$ for fixing it... the only problem that this causes is a slightly loud exhaust but i am keen on getting it fixed since CA has higher exmission standards than most states...
but what i wanted to know if this is NEEDED for the to drive go smoothly..
i would appreciate anyone who can provide input if you have made such a road trip on a used car and if i need to get anything else checked
thanks in advance!