It's really hard to say what a "basic" kit should be. One could always substitute or omit something.
I have like 6 primaries, 4 carboys, a dozen or so airlocks, many different bungs (for jugs too).
How about one of those plastic stands to place your hydrometer and therm in when taking samples? Better than tossing them into the brew for readings.
If you plan on using any grains I would recommend a nylon net that goes over the top of the fermenter to catch the grain and allow you to sparge (rinse) the grains off...(use clothes pins to hold the net in place because of the added weight of water and grains will force it into the bucket).
That 6' of syphon hose should be changed to about 10. Use some for your bottling wand and the autosyphon.
Bottle cleaning brush. I cut the loop off of mine so I can insert it into my drill for those tough ones.
John Palmer's How to Brew (1st Ed) book is also on-line FREE for your reading pleasure...