Nice tiny network you have there Mikem nice to see a little sense in networking. Love the upper door wifi kit you got there. Funky as for a small house network.
Very nice Mike... I run a similar setup with my oddity being a secondary WAP built into a kitchen unit
Thank you for the compliments

This is just a little project of mine that I keep adding to. Possibly overkill, possibly OCD with the cable colours and diagram but it keeps me busy
... I think that just a switch will be best for now at least until i have fully worked out space for a patch panel etc. ....
I really recommend you go the extra yard and get yourself a patch panel. My suggested real world benefits are as listed below
1) So much neater. 16 cable ends terminated with RJ45's would take up a lot of space and look unsightly if they are to be on show.
2) Cable identification. 16 cable ends will all look the same therefore it would be trial and error to connect / disconnect the cable you want. You could have course put individual labels on but as above this will just add to the mess (especially Brother tab style labels). A patch panel has numbered ports, you go round the house numbering your wall plate ports so that they correspond to the patch panel making your life easier. You could then go to the level of getting small runs of coloured cable (different colour for different room) between the panel and the switch as in my example.
3) Cable integrity. Once terminated on the patch panel you aren't really disturbing the main cable behind the wall anymore. Imagine having a single cable that runs from a wall plate > behind your wall > switch (as in your proposal) and you accidently run over the trailing end with an office chair or other kind of damage. You'd have to chop back the cable to before the point of damage and reterminate thus leaving uneven lengths etc. You could even potentially damage it to the point of entry into the network room thus leaving you with a bit of a headache.
In summary, I'd strongly suggest planning out the location of the switch and patch panel first, even if it means a delay to your project. You'll be left with a much neater and robust installation.
As was said though, if you're in a rush, leaving long ends terminated in a switch with a view to cutting them back to a patch panel at a later date is fine. A couple of hours worth of planning though will save you this extra hassle.
Hope that gives you some ideas / thoughts.
Mike