That sounds like a good strategy for you; but I can't come twice nowadays (or have intercourse) because I'm now too old. The last time that I came twice was in the 1980s.
On my first visit to her, I put a finger into her vagina while she was sucking me and the squeeze was so unbelievably tight that I decided to go for OWO plus intercourse on my next visit. That turned out to be a good decision, because she had already got me to the point of coming by the time I entered her, in missionary position, and the grip of her vagina muscles had me there in about a dozen thrusts. It was one hell of a orgasm and she let me remain inside her until it had completely subsided. I describe this in the reports that I mentioned in my previous post.
She is a very nice lady and worth a punt, in my opinion. Her apartment, at the top of a tower block, is superb and offers fantastic views over the whole of London.
Every good wish and best of luck.
Martyn.