You could partition the 1 TB HDD so the W7 partition is 124GB and the second partition holds the remaining 876 GB - assuming the current 1TB HDD has no more than 124GB used.Partition Wizard
works on 32-bit and 64-bit systems and is free for home use. Make the second partition primary and active 876GB from the free space.
If your current HDD has more than 124GBs used, then you can make the first partition the size of the space used. Then set your "Documents" to reside on the newly created partition, which will free-up the space it currently uses on the 1st partition. You can then re-size the first partition to 124GB by expanding the 2nd partition.
I have not had good experience with Ghost, and would Acronis or another utility provided the SSD or HDD manufacturer to clone the 124GB partition on the 1TB HDD to the SSD.