I would actually suggest that Scales of War won't translate too well to FR. Finding the right mix of locations is difficult, not to mention it's just a really poor adventure path.
Some of the individual adventures and encounters are brilliant but it doesn't flow together like a true adventure path (or, more to the point, like an adventure path produced by Paizo). This is probably because WotC failed to appoint anyone to a "gatekeeper"-type role to ensure anything resembling continuity amongst the adventures.
Anyway, that's all IMO/YMMV etc....
I would actually recommend Paizo's Rise of the Runelords adventure path as almost perfect for FR. You could place these adventures in Returned Abeir or in any of the transposed lands and have the historical elements as being imports from Abeir.
Rise of the Runelords feels like a real adventure path, story-wise. While it is written for 3.5E, a fellow on the Paizo boards has done a terrific job on his blog of converting everything to 4E. It's definitely worth a look.