without knowing what your budget is - i would probably prop up on the speakers as well. However, you should be ok from a power perspective unless you really like to give it a blast.
A good combo for the Denon are Monitor Audio Speakers, for example the BX1 or RX1 (depending on budget).
The DF 107 is a very good piece in my opinion, but has been around for some time now which means you can get it for a very decent price.
If you want to take a look at network streaming as well, would strongly recommend the Denon Ceol as a brilliant micro system. Even for the Ceol I'd probably look at the MA speakers.