fuit loops ... is good. I've smoked bud that smelt like fruit loops. chronic.
I don't know your money budget. but if you had to pick one nutrient...I would say use Tiger Bloom by Fox Farm all the way through (3 teaspoons every other watering). If you can tho...you should use Tiger Bloom for the first 3-4 weeks depending on how long your planning on flowering ... and use Big Bloom (by Fox Farm) for the second half of the flowering phase (3-4 more weeks). then just water it for the last week to drain out all nutrients to get final product :]