Maybe you should change to the French Standard System SEF. There is a conventional bid for those hands. 3SA ist reserved for balanced hands with 18/19 HCP. Looks like you get the best of both worlds. Personally I am very surprised by the simulations rhm made and I should think more about those hands as I am a 4♥ bidder so far. I dont think 3♥ is a good compromise as then the bid is not reserved for unbalanced hands any more.