You have got in the entire KM fleet as of 1/9/39:
One Scharnhorst-class battlecruiser, with the other still in yard hands for another month after sea trials revealed it wanted to be a U-boat
Two ancient pre-dreadnoughts, which it is pure murder to send anywhere they might meet a real capital ship
Three Panzerschiffe - 1v1 you'd have to back them against any British CA on paper, but that's not what they're going to get, is it?
One CA, Admiral Hipper, with one more (Blucher) still three weeks from commissioning (and wouldn't see active service for another 7 months)
Six CL, of fairly undistinguished design.
Depending how you slice them, 35 or so DD and TB, some obsolete, and none notably well-designed.
That is not much superior in combat power to the French Atlantic and Channel Squadrons (two modern BC, a crap carrier, a heavy and two light cruisers, a dozen DD) never mind the RN
You do have 25 coastal (very coastal) and around 14 seagoing U-boats - rough figures per wiki; I could look up how many were actually capable of deployment, but let's assume optimistically if this is planned it can be all of them. They might accomplish something because RN ASW is not nearly up to speed yet. But they tried in OTL