My friend grows Kahuna from Soma Seeds and it is some of the best herb I've ever smoked. It doesn't get too tall and you get giant buds.
I have had top colas the size of my forearm with that strain but I stopped growing it because of that specific reason. It gets humid where I live and I kept running into botrytis.
If you can keep your grow room in the 40's or lower (humidity) I would seriously consider this. Because it grows fat top colas it works good for SOG.
I've never ordered seeds online but Soma is a popular seed bank so you should be able to find this strain somewhere.