I would like to run this set
http://shop.bachmanntrains.com/index.php?main_page=product_info&products_id=5915

with the 3 rail cars from this set..
http://shop.bachmanntrains.com/index.php?main_page=product_info&cPath=258_269_270&products_id=4596

Would that work? Or would I need a larger power supply?

Can I use both (or some) of the tracks from the 2nd set to have a larger track?

Can the track be slightly raised in one part (the back of tabletop layout) or does it have to be on a flat surface?

These would be used during Christmas to go around a Dept. 56 Chritmas setup, would these sets be a good choice in that situation and for a beginner?

Thanks