I know what you mean about the 'long beginning'. However, the idea was to go through the first verse and the 'first' chorus quietly. Add more instruments for the second time through... (more drums, strings, and the sax), and the third time build the sound up even more... (dueting sax and lead guitar, added background dist. guitar, louder strings, and stronger drums). So, it builds up each time through.
The chord structure, hmm... well, I don't really know any complex chord structures. Well, really, I don't know how to use any chord structures other than the ones I used here. Perhaps I should work on this.... I know what the problem is. I wrote this piece (and all my other pieces) by improvising on my keyboard. I tend to stick to the chord progressions that I know how to play well (limiting I know, but i know the chords so...). Remember that when I wrote this piece, I didn't look at a staff at all. I just wrote it from my keyboard. i did not score it until much later. So, I was limited to the chords that I knew how to improvise with.