short term primary residences for future rentals?

[Casey S.]

There are a number of local foreclosures that would make good rentals. These homes are newer than my current home and as large or larger. I am considering buying one to move into and renting out my current house. Waiting a little bit and doing it again. The main advantage would be the financing since each purhase would be for a primary residence instead of investment property. What will the major mortgage companys say about me doing this? Is there an amount of time I would need to stay in one before buying the next? Any other thoughts I should consider besides moving being a giant pain in the rear? Thanks!