I recently came off my bike (and broke a wrist) and one of the reasons was a lack of brake power.
I have a converted Dawes and it has disc fitments on the rear but a non disc rear wheel.
The front conversely has my 8 fun hub motor with disc fittings but a standard fork without calliper fittings!
Two questions - which 'end' is the most cost effective to convert - I can't seem to find disc compatible rear wheels for anything less than a the cost of a full bike but 700c forks aren't that cheap either.
Do I bother at all?

I have a converted Dawes and it has disc fitments on the rear but a non disc rear wheel.
The front conversely has my 8 fun hub motor with disc fittings but a standard fork without calliper fittings!
Two questions - which 'end' is the most cost effective to convert - I can't seem to find disc compatible rear wheels for anything less than a the cost of a full bike but 700c forks aren't that cheap either.
Do I bother at all?