I understand the basics of turning a momentary switch into a latching one (have "achieved" this before using circuits found online), but that method was used as a power switch, where the calculations were simpler. On top of this, the plan I have also requires the original latch do be deactivated. I understand that this might be seen as a bit of a jump in terms of complexity, but I was wondering if anyone would be able to point me in the right direction on this project I have planned.

Thanks in advance