Since you have not yet lifted, I will leave my two cents here. Think long and hard about lifting. Honestly, unless your plans are to reaaaaally go rock crawling hardcore trails and stuff 35s or 37s, I would avoid it. I myself have done in the past with my previous LC. Slapped a BP-51 lift and 305/65/18 tires. Parked, it looked great. Moving, I hated. Even more rolly polly than OEM and now that I am thinking, even parked it looked a little silly. It throws a wrench at all Toyota OEM engineering in your car and as much as you adjust here and there, it is still going to be out of whack.
IMO, you are much better served investing in a good set of sliders and installing the OEM Toyota strut spacer in the front. That is what I did with my current LC HE and swapped tires to 285/65/18. I got a full inch lift overall (the HE sits higher in the back) and the truck is very very capable in this configuration, and I can still drive comfortably in the highway, without the sensation that I am driving a semi. 275s are just too "skinny" for such a wide body in the LC. Just my opinion. I know folks run this size all the time with no lift. It does not work for me. If you use this size and lift it will be the "skipped leg day" look.