Yea, you have to sneak out a 2nd harvester somewhere around the 1st nuke, or get it out ASAP and play defense and try to keep the nuke neutral so it doesn't charge. Either way, very difficult builds to pull off.
You CAN slot in a 6th unit as a tech unit and just buy it when you have plenty of tib, but the argument is if you are that far ahead in a normal game, then you are just using it as a style point finisher instead of a competitive choice. But some decks can run off of a harvester kill win condition where if they get the harv, they get tech and win. But this is also playing on the knifes edge because if you throw too much at the wall and don't get the harvester, then it's a lose condition.
