When to Move Perennials (Rudbeckia ) ?

I have grown Rudbeckia Goldsturm from seed this year . They are growing well if not a little slowly. As is usual with me I have planted them in the wrong place ! They are getting swamped by the Dahlias . Should I lift them in late October store in large pots and plant out when growing next spring ( I'll store them outside in a sheltered spot ) ?

TIA

 

Thanks Loofah , I'll dig them up late October and put in plant pots until spring.