I've got my foundations nearly dug out, about 3.5 x 3.5 m app 1 cubic m of concrete. I do have a small mixer. Going to be on my own with this and mixing it myself. I don't think I'll get the entire trench filled in one day ( I'm a bit crocked ) . Should I do it in two lengths, one today and the other tomorrow or fill the whole trench as far as I can do in a day and fill on top of the first pour the next day. Not ideal I know but I cannot get anyone to deliver to me, too small a load for them to bother.