when clients say they want to be fucked for a loooong time, it generally is code for 'i want to PNP and take cock for hours', which is a bit of a red flag, or it means they are starting to engage is sexting.
Going into this much detail for a booking that far in advance - also a bit of a red flag. (common tactic for guys wanting to text and never book - say its in a few weeks time so you have a bigger window to engage)
But other commenters have also pointed out - mint boys does attract providers on the lower end of scale.
A thing to learn from both sides here.