Can't recommend anything but your best bet based on the 4in1 ESC you are using would probably be the Bardwell F4 version 2. GetFPV had it for ~$35. It looks like it has the same wiring harness as your ESC board. On V2 the pins are V, C, G, N, 1, 2, 3, 4 and it looks like your ESC would plug in to it. ElectriSean likes version 1 and I have v2 but haven't flown it yet. The board has a built in OSD, plus Joshua has created a huge manual and has great how to videos.
Make sure you watch PsyBorgs soldering tips video because it's easy to toast these boards if you're not careful. Looking at your previous pics I'm wondering if you would need the PDB in addition to the 4in1 ESC. I think the 4in1 can serve as your PDB also.