With as basic and simple as you want this to be - I would look into DSLR's with lower megapixel counts, 6-8MPix, they work better with dirt cheap lens (lower pixel density) and they are much easier to photoshop.

On the Sony/Minolta end, you may want to look into a Maxxum 5D, that would run you about $300, then you've got a good amount left to invest in some good lens for your use. The Rebel XT is also a classic also in the ballpark of $300.

All DSLRs have landscape and autofocus modes (sans $3k+ ones).