Don't feed ANYTHING yet.
Flush out your soil well since you can't get fresh soil right away.
When you mix your fert solution, check and adjust the pH before use- you have to anyway with tap water that high.
The compost mix in my siggy link is nearly impossible to screw up, and CHEAP... just for a possibility since you are looking for new dirt...
Blood meal is best used as a soil amendment, but wait until the re-pot at about 5-6 nodes to pot up into blood meal amended soil.