Just install everything you can on your SSD.
When it gets close to filling up, use something like WinDirStat to identify the large folders (in "Program Files", leave your Windows folder(s) well alone), move them across to your HDD and use NTFS Junctions to create a link from the old location on the SSD to the new location on your HDD.
You could probably evaluate each application for the pros and cons of moving it based on disk access and file size but - quite frankly - life is probably too short so I'd just consider how often you use something as it may be better to move a slightly smaller (but lesser used) folder.