I know it won't help you now, but for the benefit of other prospective owners, I always recommend an independent inspection before purchase
I used the AA or RAC. The written inspection was very thorough.
It cost about 300 UKP and It didn't find any issues, and I haven't found any since either.
Well worth the cost for the reassurance I received, or the bargaining power the report can provide.
When the odometer is altered from Km to miles, there is an opportunity for deliberate transposition errors !
How do you detect this ?
The (export) Auction Sheet; you must get a copy. No auction sheet; walk away.
If the odometer is falsified before auction you will never know; but afterwards, you definitely will from the km at export auction.
Regarding undersealing, a definite must for the UK.
Regarding the rear bushes. A common problem.
Mine were redone before purchase at about the same mileage as yours.
Preventative or required maintenance ? I don't know, but I know they were done.
I guess the previous use will effect this greatly (rear end loading) ; but you won't know that either.
You could also collect all the bills for rectification and open a case in the Small Claims Court.
Whatever you do, you will enjoy the vehicle when you have sorted the issues.