Usually when number closing you want her to give you her number before she recieves yours, i'm nowhere near an MPUA but if you feel that you have built the comfort and/or attraction then personally i'd go for the phonecall. YES you may very well display lower value if she hasn't got your number but the call is safer than the text, one reason being that if by the slight chance she has forgotten your number or didn't take it then she has your voice to go by and it will remove that awkward text "who is this?".
Bottom line is that if you feel you have gamed her well enough then go for the day 2, if not then i wouldn't bother and you have learnt your lesson for next time to get HER NUMBER FIRST.
Sorry for the chunky paragraphs, i've been pretty ill today and still went out for a "social" drink...
That may affect the validity of my post
