You also have to factor in the extra long wait times for both bits of the test right now too. If it were me, unless you have some friends/family with full licences who will accompany you in your car with L plates on, I would use the mobility allowance you’d be sacrificing to pay for lessons.
For that kinda dough you could get some really good intensive lessons to get you there quicker get them tailored to how often & how long you can do your lessons (I found an hour lesson long enough at 17 when fit & healthy, I’d be shattered at the end of it back then) so I’d stick with 1 hour lessons to start, don’t be pressured into 2 hours as I know some instructors do. Once you have more experience a 2 hour lesson might be OK if you’re able.
We have some amazing guys round this way Chilled tuition in Norfolk who do all kinds of courses have a look to get an idea of what’s possible & the cost. They’ve been teaching my 14 year old to drive on private land he’s loved it,had him ragging around at 70mph at times in an Audi RS.
Anyway I wouldn’t worry about joining the scheme just to get the “free” lessons. The only way that might be a good idea is if you regularly have a full license holder who can take you out in your Kona (if you got one).
Also don’t just go pick BSM or Red or whoever ask around on Facebook local groups for recommendations on instructors I found the best instructors have tended to be the one man band rather than huge schools or franchises.
Also decide whether you want to learn in a manual or auto. If you learn in an auto that’s all you can drive afterwards but take your test in a manual you can drive both BUT if you’re going down the route if EVs then they’re all autos effectively anyway so that might also speed up your instruction by sticking with learning exclusively in an EV or auto.
The car can’t be if use for anyone else it has to be used for your benefit anyway. Bit snobbish that given how much the Kona costs & what a sought after car, reckon she’s more worried about it showing her Mondeo, sorry Jag up ? lol just joking.
Anyway if you’re listed on the insurance as the sole driver then anyone with a full licence can legally accompany you (providing they meet the dvla rules) driving the Kona as a learner.
I’d not worry about motability & just concentrate on finding a good instructor & getting your test.