Dave The problem here is that your purchase is a one size fits all item, the length should be correct but the makers' can't be arsed to shape it so it is down to you. The rod runs in the narrow gap between the brake backplate and the spring covers. I have seen two different types of brake levers fitted , so may be a bit of a challenge depending which one you have. Left straight it will rub on the covers. Where you bend it depends to a degree on the position of the brake light switch, you need to ensure that if you have a traditional type pull the spring switch, the pull can be in line with the switch, here again it depends on the position, size and orientation of the spring/rod clip. Try to arrange things so that there is the least offset on the rod. If you can, experiment first with a piece if straight wire, say a welding rod.
The fill piece for the front mount is a bit rare, so in the short term if you are stuck make your own from a piece of tube, or carve one from an aluminium block.
Any stand pivots you come across will be either NOS and expensive, or well worn. Again make your own from short lengths of bar, a washer and split pin each side to retain them. At least it means the bike can be used until the proper bits turn up. Who knows, you may be lucky.
Swarfy.