Good choice. I've got a Blue Ox and my tongue weight is hovering around 1000lbs, so Blue Ox recommended the 1500lb bars. I've had it for a year and I'm happy except that the paint on the pieces that mount to the trailer has not held up well, and has surface rust on it. Not really a big deal.
When releasing the spring bars, just jack the tongue and back of the truck up high and it will release most of the tension. Although when you are twisted in at an angle, it ma still be tight. Just be aware of it, and if it is tight, make sure the handle will be pulled away from you. Some people use a rachet so it doesn't yank the handle.