Ensuring your 4-Layer PCB Stackup is working as intended is one of many responsibilities that Altium Designer’s layer stack manager is capable of.
In your career as a designer you will design many oddly sized and shaped boards including circular PCBs. You need the power of Altium Designer for these jobs.
For the best success when manufacturing your PCB design, you need the latest Gerber X2 file formats in the free Gerber file editor in your PCB design tools.
To successfully build your printed circuit board, your manufacturers need complete and accurate assembly instructions from you in your PCB assembly drawings.
Not only do you need the best PCB design tools that you can get, you need schematic capture and design tools with the most up to date Gerber PCB software. You need Altium Designer.