Skip drives are a good approximation for Star Wars.
300 Ton Falcon (TL21)
You could argue for a smaller craft, especially at very high TLs. The ship looks like it's all living space, even though we know it can carry cargo. Where? In the wall panels perhaps, and under the floor for smuggling, but perhaps there's a subfloor specifically for cargo.
Two staterooms, a berth, a lounge, a small cockpit (must be 2 tons), a fresher (be generous and give 'em two). Two quad turrets. And let's say that there's 20 tons of cargo in there, somewhere.
That's 35 tons of payload, minimum.
Now Skip drives don't use much fuel at all -- we're talking in the 1% range. Assuming the drives themselves take up the same proportional space as Jump drives, and further assuming TL 21, then we're in the Skip-2 and Hop-5 universe.
Assume Skip-2, Hop-5, and Maneuver-9. Let's give it enough fuel for up to 5 hops, or 4 hops and a bunch of skips.
Skip-2: 5 tons + 5% hull volume.
Hop-5: 5 tons + 7.5% hull volume.
Ultimate Maneuver-9: 18% hull volume - 1 ton.
Ultimate Power-9: 13.5% hull volume + 1 ton.
Powerplant Fuel: 0.7 x (9% hull volume) per month.
Skip/Hop Fuel: 5% hull volume.
Drives: 10 tons + 55.3% hull volume
Now you can calculate this style of Falcon for any payload amount.
If there really were only 35 tons of payload, the ship would displace 100 tons. But since there are two hardpoints (and one firmpoint!), the Falcon is probably closer to 300 tons.
300 Ton Falcon (TL18)
Bringing it a little closer to what we're familiar with: TL 18 gets us Hop-2, any jump number, and any power plant number. I suspect a Prototype Antimatter plant won't be very useful, if I understand the Drive Tech Level Efficiency table right. Maybe Marc will bump down the TL for antimatter power plants (doesn't TL20 seem a little high?).
Anyway...
Assuming a 70 ton payload (I've doubled it because of the numbers I ran for the TL21 version), we have Hop-2. Maneuver-9 is a must, therefore so is Power-9. We won't bother with those old-fashioned jump drives. Allow enough fuel for five Hop-1s.
Hop-2: 5 tons + 5% hull volume.
Ult Maneuver-9: 18% hull volume - 1 ton.
Imp Power-9: 13.5% hull volume + 1 ton.
Powerplant Fuel: 0.9 x (9% hull volume) per month.
Hop Fuel: 5% hull volume.
Drives: 5 tons + 49.6% hull volume (call it 50%).
With a 70 ton payload that's only around 150 tons. So once again, due to the turrets and firmpoint, I'm thinking of a 300 ton ship.