You can get various size bottle jacks at Harbor Freight. At decent prices. I have noticed most of their jacks are the same ones @ Sears, Etc. Better prices @ HF..
Mearure under front and rear, while on the ground. Front lower control arm and rear axle. On the front dont measure the oem jack point. The bottle jack will slip off. Find a flat spot. Under the control arm, close to the wheel. The rear measure under the axle plate.
The boxes are marked for the min/max lift. I suspect you may need the 6 or the 10 ton size. About $15 to $20.
I carry a 4 ton $12 but, Im at stock hieght. I dont trust the factory jack.
While you are there buy the fold up wheel chocks, $5. It will all fit under the rear seat.