No surface cleaner, paint stripping, pool deck, first job and they need it done right away?
This will be a very good learning experience for you!
I would start off a with a little easier (and more profitable) jobs if I were you. Paint stripping is MUCH more difficult than it looks, requires knowledge of paint strippers, how to use them, what to neutralize them with, what kind of masks to wear, clothing to protect yourself, water recovery and filtration systems to recover the paint chips, proper relocation areas, masking of sensitive areas and then the process you choose to remove the paint may need to be done 3x to get the color out of the pores in the concrete so it actually looks decent.
You might want to reconsider taking on a job like this. We have done enough to know that we don't want to do any more of them.
I would sub out the work to a company who uses dry methods like grinding or sandblasting.