Tac-Star Compact Weapon's Light and Side Saddle

I just purchased a used Mossberg 500A in the 20 inch home defense configuration. I'm a little short on cash right now but was thinking of picking up the Tac-Star Compact Weapon's Light system and 6 shot side saddle to put on it.

For basic use I've heard nothing but decent things on their side saddle and I hear it's very easy to install. But haven't heard to much on the light. The light comes with the mount and touch wire for around $29. Yes I know when you buy cheap you get cheap, but for it's intended use will it do the job or is the mount that comes with not stable enough?

Any thoughts or experiences would be appreciated. I would of done a search but that function seems to be down right now.

Thanks