I did all of the bushings on my 4th gen and for the LCAs, removal was a PITA. There's a YouTube video of guys using a bottle jack to remove the bushings and this worked perfectly. I did have to apply heat to the area while using the bottle jack. One or two bushings required a sawzall and propane torch to remove the old bushings. For a NM vehicle, this really surprised me.
I used Moog bushings and they went in easily using the bottle jack method. A press will not work for this application as I have a 20T unit and didn't even consider using it. There's a no way to put a LCA on a press table due to the weird shape.
I also replaced the LBJ while I was in there with a Moog replacement but I don't know if I like the Moog LBJ. I don't like their boot and how little it covers and exposes the grease to contamination.
If you don't want to deal with this, just buy a loaded OEM arm from Yamama or whatever that website is called. Juan did that for his GX. You get all new OEM bushings and LBJs and the cost is much lower than our cost at American Toyota.
It goes w/o saying, order ALL new hardware and the cam washers before starting this project. You may or may not need them but I'd have them on hand, just in case. I had to cut through one of the cam bolts.