Vegepod nursery

I bought these vegepods in a closing down sale with great intentions to grow salad crops. Turns out I have zero interest in growing veg as this is the third lot I've ruined. I do love growing flowers though and thought I'd just use them as raised beds from now on. I have lots of delphinium and echinacea in pots that I've grown from seed with the intention of over wintering in a cold frame to plant next spring. Should I transfer them into the pods just now, leave them in there for the winter and dig them up in the spring or is that madness? I also have some pots of over grown Veronica that I've bought from garden centre bargain corner and thought I could divide them and pop them in here, again to plant in spring. Please advise if you think you would do this yourself? Cheers