Hitch drop too much?

Whether the tow bar should be level or not, depends on the particular tow bar. I have one that is designed to be level, and another that is designed to be angled upward noticeably toward the truck.

If that Vibe (Toyota Matrix) has a manual transmission it should be a very good toad. The way the tow bar mounts onto the base plate on the towed vehicle, and the height of the hitch receiver on the coach, determine your amount of drop. You need to get to where the tow bar is within three inches of level when hitched and both vehicles are on level ground.

Let's say your coach hitch receiver is 24" off the ground and your Vibe works out to 14" that's a 10" difference. A 7" drop would get you within 3".

Look up base plates for your Vibe (maybe under Matrix) on the web for the popular brands of Blue Ox, Demco, and Roadmaster. I think Demco includes installation instructions. I know the other two do, and they include a photo of the car once the baseplate is installed. That'll give you an idea of the drop you'll need. At least those three offer towbar adaptations to use other brands' base plates, so you can pick what seems to fit best.

The Ready Brute Elite towbar from Night Shift Auto offers a built-in braking system that makes it very special, and they offer connections to the various base plate brands.

Yes, buy the Jeep Wrangler!
Personally, I would find a good 2003-2006 Rubicon, preferably the longer Unlimited version.

Price for ALL of the stuff should really be no higher than $3,000.

And that price should include:
cost of base plate, wiring/diodes for tail lights, wiring for breakaway, tow bar, braking system, safety cables and the labor to install them all.

Read the manual for the tow bar you buy. Each one has it's own minimum requirements for how low or how high you can be from level.

And yes we all have scraped bottom at one time or another on a real steep driveway. The trick is to look ahead to avoid going up or down one of them. Sometimes there is just an oops. :W

First off $4k seems high. Based on what I read when getting my Sonic setup for towing, the tow bar should be fairly level to the ground, The instructions said to have no more than an "X" amount of angle. I had to get a drop hitch as well. So far no issues with driveways, but I can't remember a steep one yet.