I've learnt some excellent stuff from this group, great work. As you say TIT, do as they say and do or you will eventually come unstuck. And it's 100% impossible to argue with an IO with a stamp in their hand 🛃⛔️
If you are planning on Travelling back out of Thailand then thats when you will have potential issues. Coming in is easy but they are far more stringent going back out and you will definitely need the docs you have prepared.
House prices will collapse this year in the UK. As the year goes on your value will decrease and there'll be less and less buyers. Even finding a buyer will be a struggle and no chance of a 3 month completion.