Typically, the report is exactly backwards. If the modern drug is more potent, one needs to smoke less to obtain the same effect. The health hazards arise from the smoke, not the active ingredient, so the more potent it is, the less has to be smoked, with less health risk.
Furthermore, cannabis doesn't need to be smoked at all to obtain the effect - it can be baked into brownies and eaten, with nuch less deleterious health effects than smoking it - or smoking tobacco.
Are you familiar with a drink called the Green Lizard (I think that's what its called)? Over-proof rum spinkled with ground pot. It's readily available in the Jamaica.
I'd like to suggest baking it in with cupcakes rather than brownies. Add the pot after pouring out the batter. Doing it that way makes it easier to regulate how much pot you ingest.