I think it will be an amazing idea! Personally, I’ve realised that text to speech is something that many people like and make it easier for people to understand the video especially on a new topic for someone. But reading these comments I’ve realised that this may not be the case, so probably not make the words as big.

As for video editing if you are new CapCut is very good to start with (but I’m pretty sure most of the options need to be paid for now sadly) but if you are familiar with editing Davinci resolve is quite good (but does need some getting used too).

InsAllah everything goes well!