When we transplanted our vegetables and flowers we used a compost/soil/dry vegetable food mixture. It was not completely compost alone. It was not warm compost, it had been stored outside. They used it for blueberries and grapes. It is very rich compost, and like I have mentioned only the peppers have a bad reaction to it. It took awhile for our tomatoes to adjust but they are all fine now. Just the peppers are wilting and leaves turning yellow. I think if we want to be sure of the pH level of the compost we could always test the compost, but we have not done that yet. Perhaps we will and let you know how that goes?
Thanks for the feedback this forum is extremely helpful!