Lilac

Well, my kitchen extension has started but I have a huge lilac that has suckered. This is coming down. We've chopped all the stems to ground but I would love to save a few plants. 

I've a lot of work to do at the moment t so I'm wondering if it's worth digging up a few clumps? Or trying root cuttings? Lots on so I don't want to waste my time trying to do it if they are difficult to take. 

I would like to put a few in at the wild area at the back. I love these for cut flowers but it is a thug for suckers and is covering about a 6ft square area.