It is new hardware, everything but the PSU and the Case is changing on the inside.
I don't see some of the issues mention of concern.
I just finished using Partition Wizard to shrink the active partition down to 41.1GB with 3.06GB free = 44GB and change. It works fine, I am getting caught up on my news as I write this. I set WHS to do a backup at its regularly scheduled time. I used a MS FixIt - http://support.microsoft.com/kb/922976
to change the boot from IDE to AHCI. It will take effect on the next boot.
Tomorrow sometime (3 hours between recording #1 and #2, 2 hours between recording #2 and #3, 2 hours between recording #3 and #4 and finally one hour between recording #4, #5, #6 and #7) I will replace the motherboard, memory and cpu with a ASRock A75 motherboard/Hudson chipset, A6-3500 APU and 1600Mhz 4GB (2x2GB) of memory.
At that point, I will attach the SSD only to the system. I will boot with the OCZ Took Kit (Linux version) to run Secure Erase. I read on a How-To Geek post about how W7 is already aligned even on spinning drives and that if you image the HDD and then put it on an SSD it will still remained aligned.
Running Secure Erase it just a safety measure.
WEI updated will turn-off DeFrag and Super Fetch. I will turn off hibernation before I go to bed so it image has that information. I've already taken Page File down to 500MB and turned down System Restore to 1GB I think.
After formatting the SSD to NTFS, I then will boot up with the USB Flash drive version of WHS Client Restore and do a BMR (Bare Metal Restore) of the last image made earlier in the day.
When it goes to boot, I will press F8 to go into safe mode and run the ASRock motherboard drivers. Once finished shutdown, reboot back into the Bios/UEFI, switch video from the HD4670 to the APU, shutdown, remove the video card and I should be all finished. Also make sure the memory is running at 1600Mhz.
Boot Windows, update to the latest AMD Vision drivers, run WEI and enjoy.