Keyword search numbers?

Hi,
Seems a bit hard to explain, but what's the best amount of searches per day I should go for? For example, if I look at dog training as the Market, and I get many niche's, what search count would be best? 1,000 searches? 10,000 searches? 100,000 searches? What number would be most successful earning money wise? Thanks.

Bump.

Well obviously 100,000 searches a day would result in the most profit BUT its hard to find a keyword like that and easily rank for it. My suggestion is find a keyword that gets less then 30,000 searches a month, analyze competition and try that out. Plus you don't always rank for one keyword alone, see if you can find 5+ keywords that get atleast a few thousand searches a month and rank for those as well.