Waiting for sex?

So I've been non-exclusively dating this guy for just under 2 months. (Although after our first 3 dates I left for 2.5 weeks for the holidays and didn't see him at all during that time, although we talked once or twice). Since I came back, we've gone on an additional 5 dates, bringing the total to 8. We haven't had "the talk" and are just dating non-exclusively. (I have actually been casually dating someone else as well) Anyways, I would like to pursue the next step: sex, and I feel like that's the natural progression for us. But first, I want to take some time to figure out my feelings and then have a proper conversation with him about sex. (I am not a virgin, and have had a couple partners, but haven't had sex in a couple years) I feel like we're there physically, but emotionally I just need a bit more time. We've been building up to sex quite a bit (makeout sessions, heavy petting, etc...) and I don't want him to get frustrated with me, but early on I let him know I wanted to take it slow. So, I guess I have these questions: 1) How long is too long to ask him to wait? Is it alright to wait a few more dates? 2) How far can I go without confusing him? What is appropriate touching and what implies that sex will definitely follow? (for instance, I'd like to maybe give him oral sex but am not ready for full penetration. is that too confusing?)