It all depends on budget. If monthly premium payment is not an issue, I would say Investment-link with medical card better, as medical card will raise price from time to time. I got fed up with it after few years of med card price raised, that make me get an investment-link plan for my boy.

Actually you can get the agents/financial planner to work out the plan for you. Reduce the sum assured to the minimal, max the coverage for medical, so that your monthly commitment won't be too huge if budget is a concern.