#4-#5 I'd have picked same route as you.
Can see one "good" map reading leg - #5-#6 ....think I would have gone your route.
I had #12-#13 only difference is I went N. of the building across the wood / open area W. of control #13
otherwise....once more....pretty uninspiring on the whole?
I remember the last time we ran in Stockport (Twin Peak 2013) starting and finishing in Vernon Park - was one of the best Urban races I've ever been to with excellent planning!
5 - 6 was the most interesting leg and possibly faster to the north. The alleys were quite convulted and difficult to read so a simpler route may have been quicker.
not sure diagonal legs through blocks of terrace works either, better to give a right or left option. 18 - 25 best part of course but then just a fast run to the finish.
See the area to the south of 1 completely different to that shown on routegadget. Suspect an area of green was deleted by mistake just before the final print.
Hopefuilly my next urban at Nottingham University planned by Richard Robinson will be better.