I think as long as you are sensible, Birmingham is not as bad as you think. There are obvious no-nos, like don't moor once you start the Farmers Bridge Flight until you reach the pleasant rural nature of Birmingham and Fazely.
Cambrian Basin in the Centre of Birmingham has always been a great place for us.
There are apparently secure moorings opposite the Bourneville factory - no access from the towpath side.
The Pearson's guide is pretty good on advising suitable moorings on the Birmingham and Fazely.
Using the Black Country Museums moorins is always a good idea.
There are loads of pubs in this area, if you want variety, then the Stourport ring is a better bet - you could always do the extra bit to Wolverhampton if you wanted a challenge. It goes through just about every type of canal landscape, and is less prone to 'Bandits'.
We tend to do it anticlockwise (from either Tardebigge or Alvechurch), Mooring as follows:
Night 1: Just past the reservoirs on the W&B.
Night 2: At the Bottom of the locks that lead up to the Dudley Tunnel - don't go up into the basin, the locks leak or at least they did.
Night 3: Either at the bottom of Stoubridge 16 - about 1 mile from the bottom lock, or just after first two locks of flight. We normally go to the BCM so this is a short day. Shopping at Merryhill Shopping Centre.
Night 4: Just outside Cookley Tunnel on the Staffy and Worcester - choice of many pubs.
Night 5: Either in the Stourport Basin (couple of nice pubs), or on the river in Worcester (shopping).
Night 6: Stoke Prior (just before the start of the locks), there is a nice pub opposite the water point. Miserable fishermen, but other wise nice mooring, don't go too far from the pub as there is an industrial site that lets of steam all night (NICE)!
Night 7:Top of Tardebigge flight, or near your boatyard. Quite a few pubs in this area.
My experience of Black Country ring is pretty limited to B'ham Mainline and Birmingham and Fazely.
Warwickshire ring is pretty good, you just need to be aware of where you moor on the entrance and exit to B'ham. Once in the centre its fine. We normally do - leaving from Rugby:
Night 1: Just north of Stretton Stop
Night 2: Just south of Polesworth on the Coventry - shops in Atherstone, and pubs in Polesworth.
Night 3: And this is a big day - up early, Cambrian Basin - thousands of locks if this is too big a day then Curdworth is worth s visit.
Night 4: After morning in B'ham, top of Lapworth flight - The Boot is well worth a visit.
Night 5: Top of Hatton Flight - or bottom of Hatton Flight - Cape Horn is excellent, morining in Warwick
Night 6: Outside the Blue Lias, be warned it gets very busy early evening.
Night 7: By Masters Bridge in Rugby.
We had some abuse in Minworth by some local 'Chavs' who chose to misinterpret our friendly waves as abuse (!).
Hope that helps.