Thats right, keep everything as clean as possible for best performance and keep 5v at the trapdoor near as possible to 5v. Check voltage when everything is running at the same time at measure voltage drop at full load including processor speed.
Stability is key to having a nice A1200, this is what iv being working on for the past few months. Very long test runs for a minimum 24HR.
Modify Master accelerator card is progressing well, its the most stable high speed blizzard ppc card ever and will outclass some or all standard blizzard ppc card for stability.
It will for sure set a new world record for dram bandwidth on classic amiga but with lower CPU overclocking.
NOTE: overclocking is banned until mid 2013 on all my project and is just used for testing dram bandwidth for forthcoming processor change from 603e to processor X.
Bus speed
75Mhz = standard for modified Blizzard card.
83Mhz= reserved for modified Master blizzard card.