Ties should only be worn north of the Tropic of Capricorn for funerals, and if you are trying to suck some money out of a potential benefactor!
Dress neat-casual and be well groomed for any meeting/interview with a potential employer. Collared shi(r)t and tailored slacks or shorts/long socks.
Casual Friday is probably not a good look for your first meeting with a prospective employer.
I would have thought you could not go too far wrong with the good old short-sleeve white double-pocket pilot shirt and navy work-wear trousers.
The mob I used to fly for - white pilot shirt, cream lightweight moleskins and tan RM boots was the go!
Dr 