First, congrats on your transition to traditional equipment. You've joined a long list of those who have done the same. And having done the same myself, several years ago, I can tell you that the most 'fail safe' method of determining your draw length is to measure it by actually drawing a bare wood shaft that has been marked in inches from 25"-30" measured from the throat of the nock. You'll need to use a bow that you can draw comfortably to your anchor point, and you'll need someone to check the length for you. I suggest that you make several, 6 or more draw and holds to your anchor point while your observer takes note, and comes up with a good average. Then, don't be to anxious to cut your arrows to exact length. Give yourself an inch or two extra, as your draw length may actually increase a bit as you shoot more and begin to expand your chest.
As to bow length, that's totally a personal preference and shouldn't change your draw length. Many who hunt from tree stands prefer bows in the 60-62" length range. Target only shooters prefer longer bows for the stability and forgiveness they offer. Of course, when you get down into the 60" bow lengths, you can end up with some finger pinch, so I prefer nothing shorter than 62" in a longbow. While I've not shot a recurve in a good many years, I believe that you can go shorter with them without danger of finger pinch. An additional note on longbow length: if you plan on shooting any of the straight limb designed bows, that is without any reflex/deflex built into the limbs, like a Howard Hill style, then I prefer a length of at least 68" to help smooth out the action, but that's JMHO.
Again, congrats and welcome to the world of traditional archery. I can say, from my own experience, that you're going to find it a whole lot of FUN. Challenging, even frustrating at times, but above all, Fun!