Hey bud,sorry for the delay in helping but i spent the day writing up a tutorial on installing power lines to the grow room.
First off dont panic as there is no rush,your very smart to have not used the fertilizer you have,understand this before you proceed,anything that it printed on the back of a fertilizer container as to when & how much fertilizer to use is bullshit sales gimmiks & most likely deadly to your plants.
I see some problems that need to be corrected asap,1st off that massive planter you have her in has got to go,get a red solo party cup to plant her in from the dollar store,ya know the kind that we all used to drink out of at keg parties when we were kids,thats what you want,or a small planter of around the same size,i'll explain further.
Watering right now is very crucial,it's equally as deadly to overwater as it is to underwater,when you water your goal is to let the soil dry out near completely before watering again,if root systems remain wet all the time the plant will suffocate from lack of oxygen,think of a fish tank that is air tight with one lil fish in the tank,it might take a week but sooner or later that lil sukin fish is going to use all the oxygen in the water,then it suffocates & slowly dies.
Right now with that massive planter your fighting a loosing battle,what you'll end up with from the constant watering is a ball of mud in the middle of the planter that roots will never ever grow in, because it never dries out,once again gently transplant that lil girl asap into a container of 1 quart or less.
Now on to watering,after you transplant her give her a nice drink of water,plain water with no fertilizer,most potting soil has enough natural nutrients to easily carry the plant through its 1st month of life,make sure the water is at or near room temp,give her just enough water to wet the top 3 inches of the soil,if you do use a party cup it takes about 25% of the volume in the party cup to properly water her,make very sure that at the bottom of the cup or planter that there are 3 holes for drainage,in a party cup the holes need to be about the size of a pencil in thickness or even a little larger but no smaller,be sure the cup is raised up off what it's sitting on so the excess water can escape the bottom of the cup.
Next you need to lower the tempature,the temps your plants are at right are not as high to be deadly overnight but they are cooking the plant,get the temp down to between 72 degrees & 78 degrees,later on the temps can get higher but seedlings develop much better in those temps.
When you transplant her it would be easier for her to grow new roots if the soil has more perlite in it from what i see in the pics,i can only see so much from pics but from the looks of your soil cracking & seperating where it's dried out is not a good sign,seedlings need a very soft & fluffy mix to do their best,a nice soil mix would be 70% potting soil & 30% perlite,you can even go as high as 50% perlite & she'll still grow fine so dont worry about putting in too much perlite.
Now on to your fan,you want it blowing in the direction of the plant but very gently,you want a very light flutter of the stem,at this stage of the plants life you want the stem to have visable movement at all times but very very light,this helps stimulate the plant to produce hormones or some shit that i cant remember off the top of my head,i took a pain killer for my back & am a little loopy right now
anyhow the effect of the stimulation will result in faster growth & stronger stem making the plant more resiliant.
Right now its not super important to have the light so close to the plant,keeping temps in check is more important,another benifit of having her in a party cup until she gets stronger is that if she gets stretched from having the light too far away you can correct the stretching when you transplant by putting her deeper into her next size pot,dont be afraid of transplanting,a party cup will hold her for 3 weeks easy with no ill effects to the plant .
Do these things & im sure you'll be ok,for sure keep resting the urge to fertilize her,she's just a baby & even very weak fertilizer can burn her to death,im pretty sure ive answered all the questions you posed to me,if not post again & ill answer more as i'll be online on rollit up for several more hours.
Have fun.
Levi.