I agree with Lisa and Julia, dont push for a 1-2-1 meeting. He seems to respond well so far when you dont push anyway.
Personally I wouldnt go for the third option. Doesnt sound sexy at all and you are not there to wake up his fatherly insticts . But the way you decsribe the other two, they dont sound like you like them.
What would be a surprise, something you dont usually wear but still feels comfortable? How about a sexy top and a pair of jeans? K
Have I told you btw, that I saw your picture somewhere!!! ??