Hi PN
Sounds like you have a plan - spot on. Only thing I'd say is consider digging an area, leave it a fortnight and re-dig just to eliminate all weeds like bindweed and couch grass. Then the soil will be too heavy to dig over winter so get some green manures, garlic, onions, broad beans in somewhere. I spring consider redigging where you have already dug just to ensure the bind and couch is out. It sounds a fuss but it really worked for me. Also bear in mind that any bed with a crop in is often tied up for many months - until June if you do onions, garlic etc so make sure you are happy that those areas are either weed free or not wanted until June!
Hard work now means less and less work down the line so it is an important and enjoyable few months of hard graft! Honestly, its not too bad - get some labour in to help - family, friends etc etc
Psi