You're gonna have to wrestle them into submission. Whatever it takes....SCROG, supercropping, lots of defoliation, selective pruning. The 2 factors you'll be fighting the most are shading and humidity. Shading is gonna make larfy buds but humidity can ruin the crop if you're not careful. Mold and mildew love crowded tents. Lots of warm, moist air and poor air circulation.