Welcome and congrats on the 4Runner! =) You will love it. If you plan on doing the oil change yourself, I'm not sure how the V8 engine looks like in the 4Runner though, but I know in the V6 the filter is just inside the engine compartment bay, under the beauty cover. If the V8 in the 4Runner is the same as my GX (in terms of oil filter locations, etc) then it might be the old conventional locations hehe..
Secondly, I'm impressed that the 4Runner reminds you of a Mercedes E-class. Are you sure you are talking about the current E-class? I've driven an E350 and those things are FAST, and pretty smooth (but I have not driven a sport E350 yet)