Bernard
Forget the george, especially with 4 blocks of flats!!
I would be looking to work efficiently and with speed. If the carpets are low profile as you suggest then consider using a pad system, there are a few around, Dry Fusion, Super charly pad etc, new will cost around £3k for Dry fusion, £1.5 for charly pads and drying times will be a lot less. Maybe your george can be used for the stairs.
Do consider subbing, even if you do bucket running, you will learn such a lot.
Conversations with others recently has shown that, for example, hotel rooms are going for as little as £6.50 a room!! If your working for local government then they will be looking for the cheapest price. Don't forget method statements, risk assessments etc...... and check to ensure you have sufficient insurance, you will be needing treatment risk for items worked on and some say £5mill public liability
Scarey scarey stuff, best of luck
Chris