Yes, Z68 eliminates the "either-or" of P and H chipsets.
I have a 128GB m4 SSD; 64GB (max) is for SRT caching and the remainder is my Windows system/boot disk. I have a 2TB HDD, 1.3TB full, so all-SSD won't be for a while yet. The caching really makes HDD access minimal.
Ya, don't throw good money after old stuff.