To answer the original post, I think it's an iffy logic IMO, though you're welcome to see things that way. It might sound a certain way, but the speakers won't make it sound good, for digital, the amp would be my preferred choice of higher spend, then the source, then the boxes. For vinyl, the source, then amp, then speakers. £1k on the boxes and a fifth on the source and amp is a mismatch IMO. Dump the other two and get some good used kit at £500 each (which opens the door to some very nice equipment) and be prepared for a change. Do the homework obviously, but Shadow Audio were offering the Eastern Electric Minimax CD player for about £600 on offer the other week. Used, but barely so, that's £300 off the RRP and it's very well rated. £700 gets you a used Unison Research Unico amp.
Just a thought...!
EDIT: Incidentally - John Dolan's 401 (above) is a 1950s design which still rates as one of THE decks to have. Needs a bit of tweakery, plinths and arguably a labour of love, but no question, one of the great sources in hifi, bar very few.
Have a look at the Loricraft Audio site to see the current 501 model - you might see why turntables aren't exactly a poor relation in audio that Ashley and his ilk might have you believe...!