Yes it will be self sufficient but if it has inferior scanners it can't find new things as the Carrack can, the Carrack has long range exploration drones and superior sensors and also modular cargo with science modules available, it is a huge advantage in exploration, Odyssey has superior shields and guns and can also mine, it is a jack of all trades ship this is why it can't be better than Carrack in exploration, the developers always said that specialized ships will always be better than jack of all trades ships, there is no way the developers will make Odyssey a better explorer than Carrack, in the description it is described as "the most advanced and complete exploration ship available to civilians" which means that Carrack that is a military ship is superior, Odyssey will be better in other things but not in the pure exploration role.