You have to start small THEN go big. Focus on getting more viewers and clicks to your ads. THAT ALONE, will increase your adsense revenue. My company can help you achieve such things. PM Me for more info.
Its legal to have up to 5 units on a single page according to the adsense terms. But it should be in this combination. - 2 link units and 3 adsense for content ads. This is the maximum ad blocks you can get on any page. If you try to display more, it will obviously not show. 2 link units and 3 content ads (image/text/img or text). But make sure you don't clutter up the page or make it look like the site is made only for adsense.
No,I have seen 5 ads given by google himself.They allow 5 ads per page for some sites. But thanks for your reply. I think More ads=More money in case of my site You will not believe I earn 4$ from 200 visitors from My blog. I use some tricks for that,These tricks will never shown to you.......