I think that might be a bit much to spend right off the bat, you don't have any posts here besides this, so I don't know how much you know about PPC marketing.
I do think that's a good method from raising your bids at first and see which keywords are converting.
Although you have some important things to consider. You have 10K keywords but are they divided up into small adgroups? What about your ads, are they relevant to your keywords? Google's Adword editor has a keyword grouper to help with this. This is going to make a huge difference, before you spend that much you need to make sure if everything else is correct. You could start out with a smaller budget until you see what your CTR% and Quality Index is at.
Also I don't think you're going to be able to know what's working or not in 3 days. There are so many more variables, what I mentioned above about your ads, CTR%, but also your landing page and testing/tweaking every minor detail until you can find out what's working. Ringtones is also a very competitive niche. Unless you have the extra money to spend then I'd say spend whatever you want.