If you are still weighing up what floor system to use, then it’s a good job it’s raining as you are not ready yet.
you need all of this completely ironed out first.
Just as a few examples, before you start you need the numbers of all the local muck away Lorries in your phone, not one bloke you spoke to but 3-4 of them, if the stuff is piling up and the lad you spoke to can’t do today then you just phone the next.
the same with a concrete pump, have two lined up, talk to both talk about access and anything else.
go to the local concrete company and open up an account.
Dumper hire, if a dumper breaks down do you know a company who will drop one off the next morning.
all this stuff can turn a simple job into a disaster
get very good at disaster management, have a plan for every eventuality.