Welcome aboard.
I would say either the Tru Glo Magnum Gobble Dot Pro or the Williams Firesights. Both are all metal and adjustable. I use neither, but they both are highly recommended on here.
BTW- I have the same gun & choke as you and will be sighting it in next week. I'm also trying out the HEVI Choke. If my POI is off, I'll probably go with sights also.
Keep us updated..