Should I transplant into Ocean Forest or just hold out?????? please reply

Ok everyone here is my problem. I have 4 Great White Sharks all in seedling stage. The soil they are in now is 50% topsoil 50% cow manure and then I added perlite to my liking. Apparently the manure was a little to strong for the seedlings cause they are burning up. Btw its not my water I have been using this for mutiple grows. This is the first time I switched soils. I have playing with the idea of transplanting into a GOOD soil like Fox Farm Ocean Forest..... but the thing is I know that it already has fertilizers in the soil. So I guess to get to the point of this, I'm pretty sure that the seedlings are coming out of the nute burn, but not 100% sure. Should I transplant into the Ocean Forest and risk starting the nute burn over again or just leave them be in the soil they are in right now till they use up all the nutes in the soil?????? ++++++++++++++rep for help.

Forgot to say they have ONLY been given straight water nothing else.

wait till the roots fill the pot to transplant or you might not have a good 1! also make shure the soil is very moist b4 transplanting!

Ya thanks man but I really need advice about the soil. I'm not to bad at transplanting just wondering about the soil.