Then do coke if you really want. Seeding yield for it is insane currently, and even if it doesnt make as much money as weed + meth, it still is very profitable, much simpler and no risk involved. What I do right now to not make it so boring is use up all your meth ingredients and grow coke at the same time. Once you run out of ingredients, dry your coke, and grow weed at the same time. Profit is nice, maybe not the best but it mixes things up a bit at least.