Hi Joey,
I would recommend Nothing less than an hour with her.
The first time I went to see her I only booked for 30mins because I was sceptical about her photos on her ads. Have had too many punts with fake photos.
She is a lovely girl and I think guys of any age will get on with her. Let me know how you go.
Also I will appreciate tips for any girls in her price range you might have seen before.