Ummmm yeah, where to begin
How did you come up with that process/recipe???
Did you grind the grain? Do you have some sort of mash tun? Too many unknowns to really help a lot but:
Your mash should be at least 1 hour. There will be temperature differences within the mash.
I recommend 1 1/2 -2 qts per pound of grain.
Why are you adding water to the wort?
With 13 lbs of grain you should be collecting enough wort to have 5.5 gallons after the boil.
There are quite a few books out there that you should read and or internet resources that explain all gran very well. Don't get discouraged it's really not that hard just take some time to research it.