Hi! I'm Lichfield born and bred so will try to help if I can!
Historically, King Edwards has had the best reputation but not so much anymore. In fact The Friary has received the most applications of late. Netherstowe is also an excellent school, but is still unpopular with some due to its' past dodgy reputation, although that was all many years ago now. When it comes to choosing your secondary school I would definitely recommend visiting all three & applying for whichever is the best fit for your child at the time. All three are very good, all three are different.
If you want to be within walking distance of Lichfield City station I would recommend looking at Boley Park (half King Edwards catchment, half Netherstowe catchment) or - if you want Friary catchment - the area close to Morrisons (Beacon Street, Stafford Road, Wheel Lane, Grange Lane and all of the little streets off them) is around a 15 minute walk to the station.
Primary wise, if you opt for a house in north Lichfield (near Morrisons, mostly Friary catchment) I would second the recommendation for The Willows. Charnwood is also a very good school. Avoid Chadsmead for now - it used to be an outstanding school a few years ago but, sadly, a new head was appointed about 5 years ago who managed to somehow destroy the place
. They have a new head starting this September, so I really hope things can eventually go back to how they were. No idea how long that may take though.....
If you opt for south Lichfield, Christchurch has a good name (I went there myself many many years ago!). St Michaels used to be considered "the best" when my eldest was primary age - I'm not sure how they are doing currently though. I don't know anyone who's had a child there for around 8 years.
What is your budget? If I know what sort of price bracket you're looking at, I'd be happy to suggest some nice roads/areas that may be worth looking at.
Personally, I wouldn't touch the Waitrose estate with a barge pole. It is well placed for commuting, walking access to town etc., but the houses are so close together and the gardens so overlooked. There are much nicer bits of Lichfield for a similar price.