Thanks. Helpful information in those. I will likely have to redo this drive to match the settings for page boundaries, which I expected.
One question, though: numerous people point out that only FFS can handle block sizes over 512 bytes, yet documentation for SFS and PFS3 both indicate the ability to handle the 4k block sizes.
Right now on my 120GB SSD HDToolBox set up all partitions with block sizes of 1k and all seems to be working fine (with the exception of a bad SFS block which I am pretty certain I caused with power.)