Welcome aboard Sharp21. You will find LOTS of info here learn to use the Search and Advanced Search on this forum because your question may have already been addressed. I would do the 50/50 soak before tearing it down and have the block pressure tested as advised. Some of those cracks can be repaired. Better to address them now than later.There are a bunch of You Tube posts on flatheads. Get you a Ford repair manual usually available online.
Below is a site to inspire you. Scroll down the pages of flathead photos and when you see a play arrow, crank up your computer and enjoy the adventure.
Just remember that no question is a stupid question and it is YOUR engine. Chap
http://gocatspeedshop.com/