Yes, it will work, though as the previous respondent pointed out, there will be security issues that you'll need to deal with. I think the risk is over-hyped for most companies, as most are not really decent targets to attack, but it is an issue that you should address. As for the 24-port hub, it's overkill in this situation, but harmless. As a plus, it does give the client some room for growth, and it does nothing to reduce performance.
Do a little research on wireless access, though. The wireless NICs have limited range, and can be badly affected by the building's construction. If you have a laptop, a wireless NIC, and an access point you can install, do a walk-thru and see for yourself what kind of signal you can expect in that environment. You can get a good feel for the kind of problems you're likely to encounter after the installation that way.