A lot of disadvantages follows Google AdSense, especially for small publishers like OP. Google doesn't provide enough sponsor for small websites and also the rules are much and the publisher can lose all their money in a second for boycotting any rule or policies. When working with ad network they're more like the admin of the site, as they can influence the kind of activities they want on your website, suspicious clicks can lead to the termination of the account, and they is nobody to run to. The whole hard work ends in losses. Quite good it's a nice way yo monetize a website, but not all webmasters wants to be under a foreign control, they prefer to streamline the activities of their website gradually and grow. OP seeking for support is excellent for a growing site.
You only present the potentially negative aspects of Adsense here. Looking at it this way, it's a wonder that anyone uses AdSense as a monetization method. The reality is a little different, and in any ad network, if you use illegitimate methods for clicks, there is definitely a risk of being banned. The fact that the ad network is the admin of your site is total nonsense because it is possible to set in detail what you want to be displayed in your ad spaces.
In the end, I said that Adsense is not the only option, there are many others, almost the same, some even with a better payment rate
Of course they're multiple advantages of Adsense, but that doesn't make my response nonsense, because a site admin may not change niche or content type that is against Google's policy without getting banned. In addition, monetizing adsense has to do with the tier of traffic that visits your site and their CPA. If OP's visitors are from tier3 what gain is it to choose google adsense or an adnetwork as sponsors. It will take ages for the site to yield him much profits. Webmasters with Tier1 traffics are advised to use google adsense as they have higher CPA on Ads published on the page. However, the site OP is running is not yet big like I said, and it's a factor to consider, before jumping into adnetworks regardless of the company whether Adsense or PropellerAds