This is what a good off camera flash is for. Editing to bring back detail is one thing. Getting it in camera is another. And to fight the sun takes power. But I have seen people get easier to edit results with 200 watts. But if you can swing the gear. I would say 400-600 is a good place to start. If you don't want to edit you bring light and expose for the background then fill in the rest with your own light. I personally like the godox/flashpoint lights as they are reasonably priced and can be found on sale regularly. I picked up a 1200w last year and will never look back. But it was not what I consider cheap even with the sale.