I'm getting a shitload of stuff for my mini dream rig, $2,177 so far, and the Roland GR-20 is one of them.
I want to use the Roland GR-20 as a midi synthesizer on my computer. I'm getting a MIDI to USB adapter as well.

So my question is that am I getting the right stuff, and how low is the latency?
I got this as the adapter


How good is the GR-20? I imagine I can use it on my computer and use VSTIs on it.