So yeah, I'm really dropping Agole Kusaal. The main reason is the lack of resources. The only reading resource I have is the Bible, and though there's an updated version with the latest orthography, only the old one is available online. There's an Agole dictionary in production, but it's still in the draft stage and it should take some years for it to become usable (at least for me to try to decipher texts using it). There's a very basic textbook, but it's a little bit dated and only covers the initial contacts with the language helper. This makes me completely dependent on a teacher to learn the language. To add insult to injury, I've been quite annoyed with the fact that my tutor is always late for every single lesson of ours, from the very first one. His fee is very low, so I'm not in a position to complain, but considering all factors involved, I guess Kusaal wasn't the best choice.
So what are my possible choices? I've been checking what Atlantic-Congo languages have resources such as 1) textbooks or audio lessons, 2) dictionaries, 3) grammars and 4) reading materials available. The obvious choices that meet all these criteria would be Yoruba, Igbo, Ewe, Asante Twi, Fula and Wolof, but all these languages are spoken by many millions, so I'd try others first. Possible related languages could be a) Mooré, but there are no written resources for it other than the Bible; b) Dagbani, but for (1) there are only very basic lessons and the most complete textbook I could find is no longer available from ERIC; and c) Mampruli, but there are only one sketch grammar no longer available online (3) and there are only a few audio lessons (1). So by now I'm planning to switch from Kusaal to Mampruli, but if it doesn't work, then I'll probably switch to Dagbani instead.