Speakers do not pull amps, they only have a maximum you can give to them.
An amplifer that is rated at 200Wrms at 4ohms, will output 200Wrms (ignoring marketing crap) if you hook it to a 4ohm speaker, no matter what speaker it is. No speaker will pull more, unless it is say, a 2ohm speaker.
An amplifier getting super hot can be one of several things. What is your gain set at? If you have it turned up (It's NOT a volume folks) then your amplifer may overheat. Also, if your speakers are a lower resistance than your amplifier is rated for, then it can also overheat.
VR3's a crap amps, I've had two (bought both at walmart which should tell you something), so you likely have your gain turned up to compensate for the fact that they are much quieter than they should be for their power rating.
So, what is your gain set at, and do you have the 4ohm speakers each hooked to its own channel, and are the channels rated for 4 ohms?