You should make sure that the kitchen floor is concrete before you start.
Not sure how fast a tiler you are?
You should be able to lay all three floors in 1 day, then grout all three the following.
I would probably price £150 for laying 1 day, then £75 for grouting the following.
Since you are supplying materials aswell charge them full price for your materials, so you are making a little on them also.
Cheers happy tiling
Good luck!
