What software do you try? Good softwre will help you a lot.
Will win7 32bit adjust itself after first boot from SSD? 64bit is better.
Besides cloning(if you insist, I recommend you try aomei backupper, tutorials you can visit its website), you can also Google "Migrate os to ssd/hdd" I...
Have you already solved your problem?
In my opinion, you should create a new partition using 746.52 GB Unallocated partition with partition letter or label.
Second, merge/combine partitions, If Macrium Reflect doesn't work ,change a tool please, for example: aomei partition assistant.
Notes...
Yes, clone the whole the C partition. Usually, C partition contain system partition and other data. I suggest you try the freeware Aomei Backupper to do the cloning.
About Firefox, where do you install it? C or other drive? If it is in C, then it works.
My answer is Windows 7 back up not 100% reliable.
I also with a third-party backup software-Aomei backupper.
Its Schedule Backup has Daily Mode:
1. Set a time point in the future to perform the backup task only once.
2. Set a time point to perform the backup task once every day.
3. Set a time...