Yeah, the Grand Cherokee and T-1850 should be a good match. If you plan to tow with it a lot, you may consider adding in a transmission cooler (in addition to the brake controller and 7 way) if it doesn't have one from the factory. Factory tow packages usually include a trans cooler, but sometimes cars have them from the factory regardless these days with more complex transmissions.
2007 T-286SR Cherry/Granola, #6236, original owner, current mileage: 9467.8 (as of 5/26/19)
1997 T-2653 Blue Denim, #5471
1979 12 1/2' MC, Beige & Avocado, #4639
Past Sunlines: '97 T-2653 #5089, '94 T-2251, '86 T-1550, '94 T-2363, '98 T-270SR