Tough step this one. Their are imperfections here and there but poorly accessible and hopefully inconsequential given we will tile over.
The pump
Nice! You're tiling it at some point?
I have a few years old tiling outdoors at my house and the tiling doesnt naturally last that many years, lets say 5-10 years and its done. Thats because water getting under and freezing and thawing continously. I just dont care anymore, I'll redo it when I sell the house.