I don't see a real reason for overbetting the pot, and I actually think he's more likely to fold a bet of half of whats left. I think he gives you more credit for made hands other than flushes for that size, where I think he only gives you flushes when you go all in like this.

I probably would just call the flop. He's betting 3 into 5, I don't think it's time to turn into a bluff quite yet, and there are so many good turns for you so I think frankly that its a huge waste.