book substitutes

Hi,

We are new to SCM and my children are 6th and 7th grade. We have only been homeschooling for 3 years now and headed to year 4. I am curious if anyone has a great suggestion for a substitute book for Famous Men of the 16th Century for the Early Modern  & Epistles? I don’t quite know how to search for a replacement  book, if the SCM suggestion isn’t a fit. I would gladly, also, take some tips on finding better book suggestions for my child if what is suggested isn’t compatible for my family.