Yeah, I don't think having some deeps around could hurt anything. Hope to expand some if we can get any bees through the winter.There are nucs in medium boxes - they are not as popular as nucs in deeps and one has to hunt for them. The obvious alternative is Packages.
If you have already ordered the deep nucs putting them into a double medium is the quick and cheap solution.
What was your winter like in Oxford? I had a few colonies I kept in triple 10 frame deeps that survived winter - that is a lot of 8 frame medium boxes