I would not go with poly on your car, the Gen2 Camry's aka ES250 have an extremely smooth ride quality, why mess with that? Are your struts actually bad, I ask because on these cars the struts seem to last nearly forever, although I'm not sure on the ES250 maybe a different manufacturer was used.
So typically you would be looking at:
- 4 struts
- front control arms (they sell these with new bushings installed)
- Front sway bar bushings
- Rear sway bar links
- Rear sway bar bushings
Other things you may need are strut mounts, strut bearings, strut bellows, rear suspension arm bushings, rear strut rod bushings, other parts I can't think of right now. On the strut bellows, the aftermarket versions are generic they are not an exact fit, you have to tie-wrap them onto the existing insulator (the rubber between the strut mount and spring). I am not sure if OEM rubber parts are available anymore for your car, so you may have to do some modifying.
If it was me I would replace what I've put in the bullet list, then assess what else needs taking care of.
edit - you may need new springs if they are rusted, also the rear springs sometimes sag on the ES250. Also post some pics of your car if you can, the ES250 is a very rare car. I tried to buy one for years but never found one in decent condition.