Hi John
My wife has just passed her test


and we were advised not to go down the DAS route.
Get your CBT first it cost us £80 with her own bike (£90 without) if you pass book your theory straight away.
I would advise that you get your own 125 and practice with a patient mate preferably someone with good road skills not a speed pilot.
Lots and lots of slow riding and U turns.
book yourself a couple of 3 hour sessions with a recommended school it cost us £125 for the 6 hours after this a good school will advise you wether you need more road time and what needs polishing up,or they might advise to book your test as they did my wife.
practice any recomendations and then on the day of the test book an extra 2hours of practice before just to refresh everything.
this cost us £120 including the test fee.
My wife was gratefull she'd been advised not to take a DAS for one main reason that after 3 hours on a bike she found muscles she could'nt name and these ached the following day so she was very glad the riding was well spread out.
It also gives you plenty of time to think and practice,Im sure others will have a different view

but this route came out far cheaper than if we had taken the DAS route.
The cost of the 125 will be recouped when we sell it and the insurance lasts a year anyway and if you pass you still have to insure a bike to ride so that really is out of the equation.
hope this helps

good luck

ian
ps I think the theory was £32 its just gone up from £28 insurance for the 125 with Carol Nash was £265 fully comp with me as a named rider and to upgrade to a F650 GS is another £86.