I'm not quite sure whether it is worth the effort, for me anyway. Cheap lenses, cheap cameras, perhaps cheap focusers eventually adding up to a substantial amount of $$$, but quite likely allowing to quickly capture only substandard data anyway. What's the point of having a high SNR when quality of data suffers
Why not spend the same $$$ on a quality less complex rig that one enjoys using? And who cares if images are a bit noisy, if stars are pinpoint to the corners? Just my five cents.