HELP!! need advice on NPK ratio

Hi guys im 3 weeks in from flip to 12/12, ive been using plagron bloom nutes 2-2-4 NPK and im looking at making a tea using bat guano for the restof my grow, the NPK of the guano is 3-15-4

Is this pkay for the remainder of my grow or do i need to up the K? Add some sulphate of potash?

Please help me guys i cnt get my head around this NPK ratio thing haha