Sup all does a Fertilizer spikes with 13-4-5 value good enough for first few weeks of veg. stage?

Nope do not use them they will end up burning your plants
Look into fox farms nutrients, they are good to start with

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even thou my plants are showing some nitrogen deficiency?

Fish Emulsion, Molasses, Seaweed, Epson Salt, Green Sand, Alfalfa, Whole Ground Corn Meal, Bloodmeal will do well. Chem Ferts weakens the cell structure, locks up the nutes, kills the microbial life, destroys the Plant's natural Immunity System, which invites disease & pest, like Spider Mites.

i`ll take note of that

Hit the Dirt Doctor's web site, click Library, then the 3 post on Synthetic Fertilizers, to back my statement.