Use alaskan fish emulsion, its easy to use and makes it hard to burn your plant. Then use alasakn morbloom for flower. Every two weeks use 2tbsp/gal of molasses because most fertilizers do not supply Ca/Mg. Make sure to use warm water to mix your molasses so that it doesn't gloop up. The last 3 weeks flush with water only so that the buds are sweet.
Depending on where you live this should cost less than 50 bucks.