Not to beat a dead horse, but going back to posts 3 to 5, where did the information that you can tow 1600-2000 lbs come from? If it's from a hitch manufacturer, sorry, that doesn't count. All that counts for safety, chassis reliability and comfort is what's in the owners manual.
I have looked at the Soul and I sure wouldn't tow 1600-2000 lbs with such a small vehicle. Remember, towing limits are not set by how everything works when things are going well, but how things react in the worst case scenario.
Your T@G, with a 900 lb dry weight
is going to be 1200lbs.+ loaded.
As you mentioned, as this is all new to you, it's not a good idea to force an issue that can lead to bad results.
And, as I said once already this morning. If you have any questions about the wisdom about this issue, bring it up with your insurance agent and your lawyer before letting a mechanic or an advertisement steer you into a bad idea.