Also, here's the overdue combination breakout board. It's intended to work with Bolle's riser or halkyardo's SEthernet/30 ethernet boards, and allow you to install a VGA cable as I supply with the 30Video kits. It also has an opening for a DB-15 video connector as used by vintage mac video boards. I have not been able to test the compatibility with Bolle's riser however, so YMMV.
Combination Breakout board for MacSE/30 / IIsi: VGA + DB15 + Ethernet (Bolle or SEthernet) - ZigZagJoe/Combo-Breaker
github.com
I'd recommend white solder mask if having it made at JLC.