Changing Size of Boot Camp Partition on SSD?

[gamerish]

I'm looking into getting a Seagate Thunderbolt Adapter and a 256GB SSD for installing Boot Camp on the rMBP. I found these instructions on another thread:

1> Install Windows 7 to the internal (non-SSD) drive using the Bootcamp Assistant. I wouldn't suggest activating windows yet...

2> Boot into windows, hook up the SSD via thunderbolt, and let it install all the drivers.

3>Use Winclone ($20) to make an image of the bootcamp (http://twocanoes.com/software.php?software=1). You should probably do the shrink filesystem option from the menu first - this doesn't actually make the partition smaller, it allows you to restore on a smaller drive/partition than you started with.

4> Restore Winclone backup to the SSD

5> Use Bootcamp assistant to remove your internal partition

6> At this point I'd go through the windows activation. You might also want to turn off scheduled defragging of the filesystem.

7> Run win clone again so you have a backup that includes the activation - that way if you ever have to restore, you won't have to call up microsoft for the reactivation crap.

Basically, you just clone the BC partition from the internal SSD to the external - simple enough. However if I wind up taking this approach I will be getting the base rMBP model with the 256GB internal SSD. As such, my internal Boot Camp partition will only be about 128GB. My question is, once I clone the 128GB internal partition to the 256GB external SSD, will I be able to change the size of that partition to 256GB external so I can take advantage of the entire SSD? Does that phrasing make sense?