Is this light good?

I am growing one plant inside in a simple storage box grow box DIY thing, i am using CFL Grow Light E40 screw lamp holder hanger uk plug | eBay UK
to start growing a single autoflower plant with 8-10 weeks
will it last all its period till harvest? can anyone post links of good lights

Wattage : 20W
Equivalent to : 100W
Light Colour : Warm White 3000K or Daylight 6500K
Average Life : 8,000 hours
Lamp base : PAR38 (E27 Edison Screw)
Lumen: 800lm
Height : 136mm
Width : 122mm
Energy Rating : A