Finished my Internal to External converter complete with two-way switch just like IIc had. I can now boot from external port with FloppyEmu or flip a switch and boot from internal. Here is the switch that changes from internal to external drives. Or I can disconnect converter box and just use system like normal by connecting these two wires (drive enable leads). Also added cooling fan as I read these computers had overheating issues. Also added heatsinks on chips that got super hot on the motherboard.