With the bumper alone you're looking at probably 60lbs. I think that's what CBI said their aluminum bumpers weighed? Then if you are adding a winch you have to throw on another 60lbs minimum, more likely it'll be closer to 80lbs, but it can vary. Light bar and fogs add weight, but nothing that'll make that big of a difference.
Keep in mind if you have rock sliders, skid plates, roof racks, roof top tents, etc, these all will play a roll with the front suspension as well.
I have a '17 so I'm not sure how well they compare to the fox shocks and what the Fox ones can handle, but with the 2" TRD Pro Lift from Toytec for the Bilsteins, I still had a good amount of sag. Had I not had the 2" spacers (which is what the lift really is) it would have sat lower than stock no doubt in my mind.
Posted a photo to give you an idea below.
As far as fogs, yes you'll want the circle style ones. Their official name is the Squadron. Those are what fit perfectly in the CBI style cutouts. Same with C4 and others.
I don't think you need a new suspension, especially when you can adjust compression, but you might want to find the same size coil in a stiffer form to help with the weight. With what you're doing a 600lb should work fine. Assuming that can be done on those shocks.