I think you're all doing Nige a big disservice.
Obviously any money donated was to further his kind hearted attempts to ease the sufferings of those poor boat people.
The 4 houses will be used to accommodate many of those who have risked life and limb to reach our great country in order to do the jobs our folk won't do (Doctors, Nurses, Dentists, IT Consultants, Teachers etc), and has gone even further with all 4 houses being signed up to a meals on wheels company to ensure they all get adequate healthy sustenance while awaiting their citizenship interviews.
On top of this, all people accommodated will have access to private medical care (already paid for) to help reduce the NHS workload.
He won't have much change out of the £5 million
Alternatively, he could be pissing it up the wall and having a jolly good time, thank you, while knowing that in the end he doesn't really have much chance of becoming PM or Reform forming an alliance with any of the other parties.
Fair play, I know which one I'd be doing