question about webarchive - site building

Hi everyone! I Have a question
I bought a domain at auction, such as coffee machines theme. When(2years ago) it was a good blog, with lots of blog post (unique and not copied).
I have written a new content by my self, made the site with him.




Question - is it good or bad to take from webarchive pages that were in the old site owner? I repeat, they are unique in my niche
I will be glad detailed answer, good luck and thank you!
P.S I was not very concerned about the issue of the aesthetic part of the question copyrights and so on, I care about rank..

So maby I post thread in wrong direction?
100views:no answer its a bad convert rate for BHW

Of course it will be useful if content is solid and not very short. Make sure to keep the URLs very same as in webarchive and check for links and parameters on those pages.

If you rewrote the content on same URLs and they aren't ranked well, you can move it to different URLs and restore old ones. I'd try that for sure.