To the original poster don't let someone tell you you can't flower with a MH because you can. You may* not produce as large a quantity of bud using a MH alone but it would be just fine for the entire grow.
-I would suggest swapping between HPS and MH though throughout flowering to get the full benefit of both spectrums. MH does not produce as many lumens as HPS, but MH bulbs provide UVB light which plays a big part in trichome production, and overall quality of the bud.
IMO Use a good 6500k fluorescent for seedlings/clones, MH for vegging, and a combination of MH and HPS for flowering. **You can try the SUPER BLUE BULB if you are using a 1000 watt ballast, I havn't used one but it looks amazing it host's a combination of HPS and MH in one bulb
As for the bulb in question EYE brand produces one of the highest lumen outputs available in HID lighting. You should be able to flower delicious and colerful buds. Go for it and don't hold back it's a great, quality product.
-nuskool