Vinylmatters,
It will help a lot if you get a Radio Shack Sound Level meter and a test disc with 1/3d octave pink noise tones up to at least 200hz (Stereophile test disc's with pink noise work fine). That way you can measure everything, speaker and chair location. FWIW, I have found, everything else being equal, that when my listening position has been about the same distance from the back wall as my speakers are from the front wall (+/- 6 to 8 inches) I get the flattest bass response, somewhat like set out in the Cardas system of 3rds.
Regarding the 4Jr's, I've never heard them, but the speakers I've used have had wide dispersion tweeters (Seas and Dynaudio) and configured as I suggested they were not a problem. I could easily imagine that they would if they were pointed straight ahead or listened to on axis. I assume there is much more involved that just the dispersion pattern of the speakers.
FWIW, if you are going to be listening in the near field, I would strongly suggest that you do not get speakers (or any other components) which have any kind of a reputation for being 'bright' by any name. At most you'd probably want neutal speakers which would allow you to find the tone you want thru the selection of components and assessories.