I think a real possibility for me now is 700+ pounds, but I'll need consistent weather in the 80s for the next three weeks if that is going to happen and we will need a late frost this year. I will also have to get rid of the powdery mildew that started on the older leaves the beginning of this week. I tried compost tea with earthworm castings and then later milk in a 9:1 ratio on the leaves but it hasn't taken care of it yet. Once this rain stops I will be using a Chlorothalonil fungicide on the leaves to hopefully knock it out. I'll probably also remove some of the worst leaves in the hopes of keeping it from spreading.
This week I have changed the feeding program for the pumpkin to push it through to the end of September. Right now I give it 1/4 cup of Neptune's Fish & Seaweed 2-3-1 as a foliar on Sunday, a little less than 1/8 cup of Bio-Genesis High Tide 0-0-4.5 seaweed as a foliar on Tuesday and 1/8 cup of Happy Frog 4-4-5 on Thursday. These are all good quality organic fertilizers with a nice micronutrient profile.