I'm not sure why no one has replied ?
In general a video light won't have as much power as a strobe but is better than nothing. The Sony video light is usually more expensive than other brands. I used a Hartenberger Mini Compact video light years ago with a Sony P9, it works GREAT now as a torch for night dives and I occasionally use it to help my D70 focus in low light.
I'd say go for something other than the Sony and you'll be able to use it as a torch later.
As far as which strobe will work well with your W7 I'm not sure.
Someone care to comment ?