Yeah splitting time is tough, but don't get ahead of yourself:-)
Movies are fun and take actually less thought most of the time vs engaging 2 channel... Most of the imagination is made up for you.
But anyway I found myself in this situation about 3 years ago and finally figured out in the end selling all my costly HT stuff going to just fun more compact HT stuff was as much of a thrill and felt better to having much less investment in it, but then I ended up spending more on the 2 channel and figured out nothing can replace the 2 channel hobby and quality. Although in todays atmosphere it is far easier to get really great quality HT for pretty cheap as long as you know what to buy, cause now you can get basically the best picture available with a 200 dollar DVD player, and about 3000 invested in a projector and screen, with about a 2000 dollars worth of used surround equipment and speakers.