I bow to the suggestions of the others. Some great ideas there and I'd forgotten about the butted spokes being actually stronger in real world use than the single guage spokes.

The heads out deal refers to lacing the spokes so that they are all feeding off the inner side of the hub flange and thus the spoke heads are all on the outside instead of the insy/outsy alternating head pattern on your wheel now. The advantage in this case being that the head out spokes will have a touch more vertical angle and therefore will need that little extra tension to counter the DS side spokes. And since the goal is to try to raise the NDS (that's so much better than typing non drive side each time ) tension every little trick is worthwhile. The only issue is that now you're running radial spokes on the one side and all I've read suggests that the good ol' 3 cross pattern is overall stronger. Perhaps some of the others can shed more light on this semi radial option.

Someone else mentioned the issue with cheapie machine built wheels. It's quite possible that just a new custom built 36 spoke typical 3cross but done with care and attention would be just fine for your needs. Certainly a decent wheel builder can better the output from one of those machines any day of the week.