Logic Flaws in XP Upgrade?

I'm thinking Xmas present here.
 
I am attempting to decide on the "best way" to upgrade my brother's 3 yr+ old Dell Dimension 4100 from Windows ME to Windows XP and would like your feedback on my "best way" logic.  My brother lives some 2000+ miles away and is not an experienced computer user.  We do a lot of HELP over long distance telephone which has always worked fine; however, nothing as extensive as an OS swap out. 

Here's what I've mentally honed in on and would sincerely receive your feedback on cracks in my logic.  I have a fully loaded+ Dell Dimension 8200 with XP on it.  My brother's Internet connection is 56k dialup whereas mine is 2 gigabit cable.  My logic is also based on the age of the Dell Dim 4100 which is pretty much a Dell standard configuration.  I want to give him a Formatted/Clean Install of Windows XP.  I am a fairly experienced computer user; however, I have never done a remote upgrade of the OS as described below.  Please understand I'm trying to make it as easy as practical and reduces many hours of long distance telephone time. 

1.  My brother's system was just upgraded to the latest Dimension 4100 A11 BIOS as downloaded from Dell.

2.  My brother "borrows" from a nearby friend a Dell-supplied XP reinstall disk and runs the compatibility test to define what third party software needs upgrading. 

3.  My brother saves off on CDs all documents and other items that he wants to retain and restore.

4.  My brother sends me his Windows ME disk and any other third party software CDs he wants to keep on his system. 

5.  I purchase a new Western Digital SE hard drive for his system...one that fits his system and mine.

6.  I "temporarily" remove my 8200 hard drive and install the new WD hard drive on my system, format it for use and set up to boot off my CD drive.

7.  I install the new Windows XP upgrade using his Windows ME as the upgrade reference.  I recognize it will set up all my hardware drivers based on my system configuration during this setup.  I activate the XP upgrade via telephone.

8.  I then download/install, via high speed internet, all XP hotfixes, etc.

9.  I set up the OS to what I know/feel best suits my brother's usage and needs. 

10.  I load all third party software, apply any updates via the internet, and set these programs up based on my brother's requirements.  This would include NIS 2004, MS Office XP, Roxio, etc. 

11. Once everything is setup and I deem the upgrade and setups are complete, I remove the new hard drive and mail it and his software CDs back to my brother.  

12. Telephone time… My brother installs the new hard drive in his 4100 and boots up.  I am "assuming" that XP will see the hardware differences, kick out my 8200 hardware configuration, and set up his configuration as it starts booting up for the first time.  This is what I am most concerned about and that the hardware automatic conversion will happen.  My thinking says it will.  I know drivers will have to be examined; however, I don't think his hardware configuration will require any updates over the standard XP drivers. 

13.  My brother deletes my cable modem Internet connection and sets up his Internet dialup connection and OE mail system.  He then downloads any new Windows Updates and NIS 2004 updates. 

14.  At this point, he will have written procedures from me on how to use various system features of XP to change the normal "personal preference" features he might want to...such as display resolution, etc. 

15.  Once stabilized and somewhat familiar with XP, my brother would then restore all his personal documents, etc….more telephone time.

Would appreciate receiving feedback on logic flaws and any tips you might have.  Thanks much in advance.