New Road bike or New wheels?

Hi, I've got a knackered rear wheel and looking at getting either some Scribe's or perhaps some from cycleclinic/wheelsmiths - for under £400 (do like deep section rims though).
My quandary is my bike is a Mango Point AR which cost £600 - Am i mad thinking of buying wheels for £400 on a £600 bike? Its basic spec Claris and is heavy.
I've gotten into road riding more than I thought i would (longtime mtb'er) and the Mango is my first roadie bike so in the future probably would want to upgrade to something better - like a ribble r872 disc or similar.
Thanks.
My quandary is my bike is a Mango Point AR which cost £600 - Am i mad thinking of buying wheels for £400 on a £600 bike? Its basic spec Claris and is heavy.
I've gotten into road riding more than I thought i would (longtime mtb'er) and the Mango is my first roadie bike so in the future probably would want to upgrade to something better - like a ribble r872 disc or similar.
Thanks.
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I have so far shortlisted these: (I'm 85kg)
https://ebay.co.uk/itm/Kinlin-XR31RTS-disc-brake-wheels-Light-wide-and-tubeless-ready-/162866366619
https://scribecycling.co.uk/collections/alloy-disc-brake/products/scribe-race-d
https://wheelsmith.co.uk/product-page/race-30
thecycleclinic.co.uk/collections/road-disc-brake-wheelsets/products/borg22-disc-road-cx-wheelset-front-and-rear-heavy-rider-touring-28-spoke