Although I would be pleased if you could make use of my tutorial, I would also vote for a clean install on the SSD. Then you do not have to worry about any settings and have no chance of making mistakes. The only additional optional setting you may want to make is to delete the hiberfile (takes unnecessary SSD space) and maybe reduce the pagefile to 2GB.
If you're happy with an in-place Upgrade on the HDD, you can later try a clean install on the SSD and see if you can get all of your software installed. You'll be able to compare performance and if you find the HDD comparable and it has software you can't find for SSD, you can then try transferring the HD image to SSD using Wolfgang's first tutorial.
WHile you are using separate HD's with OS's, I would unplug one when installing or upgrading to the other. After install set preferred drive to boot first in BIOS setup, then choose the other one to boot using one-time BIOS Boot Menu key given on first boot screen. This keeps the HD's independent to come and go as you please.
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