There are a lot of guys who can give you much more complete information than I can, but I will try to get you started. First of all, you have a lot of homework and off-season scouting/exploration to do.
Obviously, since you are a successful gun hunter, you know something about deer and deer hunting, but study deer and their habits in depth. Just keep in mind that trad hunting is a very close in adventure, so thick foliage is not as much of a disadvantage as you might think. During the off season find a location that has good deer sign without too many good trails for off road vehicles, if that is possible.
Find trails, feeding, and bedding areas. This is where the off season work begins. Learn the lay of the land, and study up on the types of food available, as well as when these food types ripen. This involves learning to use the topo maps as well as familiarity gleaned from time in the woods. Scout as often as you can and locate numerous stands sites. My understanding is that a square mile is about what a deer normally ranges, with more during the rut, so cover some ground. Deer will commonly have preferred travel routes that you need to find.
Once you locate a suitable ambush area, try to select multiple stand sites for a given trail or feeding area so you can adequately hunt the wind whatever direction it comes from.
As you can see, I have said a lot of stuff, all of which you have heard before. No magic secrets, just a bit of work and study. Let me repeat that trad archery is close in. Practice diligently, and try become proficient out to about 20 yards or so. Some guys do well at ranges longer than that, but as you read stories on this site, you will see than many very successful hunters keep ranges closer than that. Did I mention this is a short range affair? Be patient, and remember you will need to pattern the humans as well as the deer, especially if there is a lot of human traffic in your area. However, you may note that certain days or times of day seem to have less interference than other times.
Last word, and this is important. Use Permanone or Duranon on your clothes to protect you from ticks, and WEAR SNAKE BOOTS! Again, I apologize for talking so much without saying anything new and revealing.
Good luck, and I hope to hear of great future success with traditional equipment. Many things will show up on this site that will be useful to you.