I've done 2 months. Now this is from the perspective of an older couple, not a couple of kids living at home that have to screw in their car.
If you had been dating this woman for 2 weeks, you would want to screw her right? Well then build that familiarity, and desire in the time leading up to it. Now in that time, it could fizzle too so just see where it is gonna go, and take it as far as you can. You are going to have to determine how much of your personal life you are going to share to build that intimacy....
Mainly text and talk to get to know more about one another, and focus on the similarities. With that much lead time you can find out a lot about your date, and I think make that first date a little more intimate by getting the "getting to know you" stuff out of the way. Create some anticipation for what you are going to do when you do meet. if you can create an atmosphere of common interest, and go have an experience together, there is a much higher likelihood of your first meeting becoming more intimate. A coffee date after 3 weeks of talking is a disappointment. That much lead time, and investment demands an experience, culminated by a night together. Read some of Seppuku's LR's. He does a good job of setting the expectation of sex through his phrasing and setting up dates that end up in locations where sex can happen discreetly.
Use this lead time to deep dive as much as you can. Find the triggers that make her feel romantic or horny. Get the awkwardness and pauses of a first date out of the way. Make her crave that call in the evening.
Create a vision in her mind of you as a lover, and greet her on the date in a manner that conveys you as a sexual man. Basically sweep her off her feet when you meet her in person. Create the impression in her mind that your meeting will be a re-uniting of two long lost lovers.
Now be warned...This can create some attachment, especially on her part. The anticipation and intensity of sharing a passionate time together is intoxicating. The follow up communication has to be frank but gentle to avoid her feeling used.
