Finally my First AG!!!

Hey Fellas!!
Finally going to do my first AG this week! I am pretty stoked. I'm doing a brew that I have made a few times doing a Partial Mash (Step mashing).
I have a ten gallon Rubbermaid MLT and a 40qt SS pot. Gonna batch sparge.

Ok...tell me if I am right.
1.25 qt of water per pound of grain @ 158 + 2-3 degrees for dough in(after prewarming the cooler)
90min

2 qt water per pound of grain @ 170 for sparge.

LHBS was out of 5.2 buffer so I am hoping my ph is close or maybe a little high. I do have gypsum to lower the ph if needed.

Pointers? let me know if there is something BIG i am missing. I plan to read through richbrewers key points again and take some notes. I always keep a log so no big deal there.

Good luck, I recently finished my second AG batch. I'm not in postition to give much advice yet, but all I can say is that it is worth it in the end.

correct me if I'm wrong, but with batch sparging your PH is as important as compared with fly.