Thor, if u want 35s id suggest going with a 2" BL... thats wat i plan to do and it should be enough lift without trimming but at worst u might just have to do just a little hammering and cutting. Shouldnt be too bad but id suggest getting a buddy to help with the install since itll make it much easier.
Oh ya and since u have a brush guard and plan to keep it, ull have to custom make some brackets to lift that with the 4runner, or u can have 4crawler fab them up for u tho im not sure of the price.