You need to be a tad more organised than that lol.
One thing I will say is don't try and build the engine on the floor. I built mine on a tool chest before I spent £40 odd on an engine stand.
Storing stuff on the floor is ok just make sure its well out of the way otherwise you might kick it or something into it which as sod's law dictates will be in the one place that does matter like a mating face etc.
When you first start assembly clean clean clean and then clean again!!
Good luck and I'm here to help if you need me
Daz