When I sold my Td5 Defender the buyer wanted an RACWA check and I said "No" purely because they're crap checks.
We'd had a very nasty experience with them with a car the daughter bought, I said the timing chain was stuffed, they said it was noisy belts...... and then the chain broke causing all sorts of other damage.
No way would they even think about paying for the damage and I wouldn't take anything to them now.
However I wasn't against a check by a decent LR specialist repairer and he got the stealer to do it, they gave it a great report and he couldn't have been more pleased to pay them a 180 bucks.
Glad you've got the vehicle you wanted and good luck with it. I actually wish I'd kept my Defender now.
Alan.