Topping will definately benefit you. My best attempts come at 4-5 nodes.
Arteekay and Jay used to run Crop King Seeds and were particularly impressed with Early Miss, White Widow auto and Jack Herer auto. Just about anything by Sweet Seeds is a good choice. Bomb Seeds sells some real winners, including the THC Bomb. I've grown all of that list, but not as well as that talented pair did, and it's all documented
here.
Mephisto is marketing some of the most exciting autos out there right now. Talk to Rifleman about that. They have a big sale coming up end of the month that you'll want to take a look at. He posted about it, last week I think it was, on his grow journal.
There are some exciting CBD autos out there as well, and every garden should have at least one plant with a ratio of THC to CBD of 1:1 or even 1:2. I highly suggest you look for one in that range. It'll revolutionize what you think you know about getting high and relieving pain.
That should get you started.
to the crew. Make yourself at home. You're in for such a treat. You won't believe how much you'll learn in your first grow alone.