Honestly, no... Not particularly.
You could have a 9900, 9900K or 9900KF for ~$380:
The added cost of Z930 doesn't strike me as 'worth it' for ~$600 all in.
This is a bit of a flaw. Replacing the board is not 'streamlined' by definition. Boxing yourself into only the same era under the guise of simplicity doesn't really work here.
With $600 (and before considering new 11th 'gen' chips), an i9-10850K and Z490 would probably be a better buy, and no more 'difficult' in execution vs what you're proposing already.
PCPartPicker Part List
CPU: Intel Core i9-10850K 3.6 GHz 10-Core Processor ($417.10 @ Newegg)
Motherboard: Asus TUF GAMING Z490-PLUS ATX LGA1200 Motherboard ($179.99 @ Amazon)
Total: $597.09
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2021-01-21 13:45 EST-0500
10 core / 20 thread, 5.2GHz boost - it's a 100MHz clock drop over a 10900K and otherwise the same. +2core/4thread over the 9900K, a bit more 'modern' (you can drop 11th Gen chips into a Z490 but not a Z
390) and very similar money.
Agreed on the ASUS BIOS. I find it more user friendly. I wouldn't spend substantially more for an ASUS board of MSI or Gigabyte etc, but at a similar pricepoint, I'd lean more towards ASUS.