Nute boosters

[Caustic]

High all, Well I am getting my equipment together for my grow, I have my lights, ventilation/odour control, most of the electrical components and am now looking at substrates and nutrients. I am planning a perpetual grow I am going to start with hand watering (at least the first 2 harvests) to get a feel for the strain. (Eventually I will set this grow up in an ebb and flow system) I was planning on using coco, but I am now thinking of keeping it as simple as possible and sticking with perlite (I have used perlite for all my previous indoor grows, so I already have a good grip on it) I just bought Dutch Master advance grow and bloom 2 parts, Not the best nutrient on the market, but it will do for the start-up (and it will give me a good middle of the road to compare better quality too down the line) I want too keep my nutrient additives down too as little as possible, I was thinking of maybe using Seasol as a grow booster? And Potash as a flower booster? It has been a decade since I was buying nutrients and things seem to have gotten quite gimicky, I should not need to buy half a dozen extra additives to round out a good quality fertilizer and get a good yield. So marketing and glossy magazines aside what is the best bang for your buck?