Best bang for my buck with a strict budget.

I have already been thinking about next year's prep. My patch us almost empty, so I wanted to start, and prepare pumpkin and squash areas for next year. I have a guaranteed 100 dollars, and hopefully will win a bit from last nights weigh off, but won't see those results until next Friday. I will hopefully be able to get some horse manure for free, an dis already have 30 Kg of triple 16 granular, and some water soluble for next year. Wondering what you would suggest I get. Thanks!