Hi dude
the equipments that you need depend on the area that you have to see how many APs do you need there in addition to the number of users that you have already mentioned in your post
on the other hand, do you want to go with the new technology which is lightweight AP or the old normal one
In case that you are willing to go with lightweight APs, you need to have a centralized equipment which is called controller
for the network equipments, you need to have PoE switch or switches based on the number of APs that you will need after doing the wireless site survey
for the printers, you can have either normal wired printers or wireless ones
if you need more specific design, please let me know what type of applications you have and the size of your building
Regards,
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