Hi Gregor,
The parking lever travel is easy to sort out.
Park on level ground.
Release handbrake
Press *hard* on the brake pedal, repeat a number of times
Apply handbrake
You should find that the travel is much less. If not, release the handbrake and pump the brake pedal a few more times. This should adjust up the handbrake cables, which operate on the front brake pads. I think if adjusted fully you should get only 4-6 clicks of the handbrake ratchet before it's fully "on".
If this doesn't work effectively, then there is a further adjustment you can do on the calipers - but I've not done this before. If the handbrake cable outer sheathes are frayed then this will hinder any adjustment, but I'm assuming they're ok as you didn't get an advisory on these.
The front flexible brake-hoses... hmm, I've never had an advisory on these... normally if they are perished I've been advised to replace them for the MOT. Not done this job myself.
Subframe mounts- not something I would attempt myself, someone else can advise on that.
Cheers,
Mark.