Is this an invitation to sexualize/escalate or just convo?

"It may or may not include wine & massage oil"

It depends on your goals. If you are screening for girls who are exclusively DTF, I would take this opportunity to sexualize: "oh, now you want a peek into my mind? be careful what you wish for, naughty girl (devil emoji)". She'll likely push further, and I would go into standard sexting from there. If you think that she might get turned off, well she likely would be a prude on the date, but there is a segment of the population that won't get sexual over text, but who will be closable on a date, so the safe move is just to take the date. I say go for it, but I screen a lot