Looks like a good deal. The battery would be my only concern.
I've not used those lightweight hoods, but have had plenty of places where I probably should have had one. It's basically a positive pressure around your head. The bad thing is it looks like it draws air from the immediate area and filters it rather than pull clean(er) air from another room/outside.
It 'should' work, just make sure the air your pumping is good. It wouldn't be the first time someone left a running vehicle by an air pump, thinking it's just a compressor, or not even thinking at all.
These are also good and come with tear off/replacement lenses:
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