A lot depends on our activities. If we're doing the Serenity thing, hauling goods from rich worlds to poor worlds, a Free Trader is probably plenty, at least to start with.
If you want us to be able to reach somewhat remote worlds, or planets that are off the beaten track, then a Far Trader is more appropriate.
If you plan on us encountering dangers in space that will require combat to overcome, then an upgunned version of either of those ships would be fine.
A Zhodani ship being flown around in the Imperium is just asking for trouble. We might get away with it in a sector far from the Spinward Marches, where the Zhodani are just a nasty rumor. But if you want us flying around a rough and tumble frontier sector, it's hard to do better than the Spinward Marches.
If you really like the stats of the Zhodani ship, you can just 'transplant' them onto an Imperium model to avoid that messiness.
If you want us to be able to reach somewhat remote worlds, or planets that are off the beaten track, then a Far Trader is more appropriate.
If you plan on us encountering dangers in space that will require combat to overcome, then an upgunned version of either of those ships would be fine.
A Zhodani ship being flown around in the Imperium is just asking for trouble. We might get away with it in a sector far from the Spinward Marches, where the Zhodani are just a nasty rumor. But if you want us flying around a rough and tumble frontier sector, it's hard to do better than the Spinward Marches.
If you really like the stats of the Zhodani ship, you can just 'transplant' them onto an Imperium model to avoid that messiness.