What does 1 Chronicles 22:5 mean?

David thought, 'My son Solomon is still young and inexperienced, and the temple for the Lord has to be magnificent—famous and beautiful in every way. So I'll get everything ready for him.' So David gathered all the materials before he died. 1 Chronicles 22:5 - Modern Text Bible

(David knows Solomon isn't ready for such a huge project, so he does as much as he can to set him up for success.)