LED light bar set up

Couple questions. Looking to purchase a light bar to mount to my steering stem / handle bars on my reny. Im thinking going a dual row 6", 9", or 12" and make my own mounting.

1) Any imput as to flood, spot, or a combo set up. I 9" or 12" really leaning towards combo.

2) Any battery drain issues having the extra watts draw. Im looking at a few different light bars that would draw either 36W, 54W, or 72W.

3) Brand recommendations. Considering Extreme or Kawell off Amazon in the $30-$50 price range.

Thanks