Routerboard 750 and user manager

I have a situation where i have around 20 users on a 2Mb/s download speed. What i need is user manager to limit the amount of time that each MAC is online for. They can use the internet for a couple hours daily. Currently its a free for all, and users are doing windows updates, p2p, skype video and all kinds of bandwidth hogging activities. what i need to know is if the routerboard 750 can operate the user manager with up to 20 users and do bandwidth limitation. I know that the rb750 uses MIPS architecture wich is what user manager needs, what i dont know is that there is also a HDD requirement of 2MB and wether or not the RB750 can support the user manager software. If there is better hardware suited to this job then maybee i should be looking at it instead of the RB750.

Any input would be appreciated.

Jon

same case here
any response ?

Bit long ago, but.

Yes.

Ive set up a Routerboard RB750 stock standard with Hotspot and Usernamager with 3GB user CAP for 70 users.
Cap resets monthly.

Granted not all users connect at the same time. but it works like a charm.