i can relate, gas is a big problem with us too, and the ds is already 3.5 mo! what helped: holding him on my arm on his tummy and walking, the grape water (a little). massage didn't help at all :-(. is your son a tummy or back sleeper? i found out that their legs jerk more when they sleep on their back. so during the day he's taking his naps on his tummy, and in the evening he falls asleep on the tummy and then we gently flip him on his back. i was firm about him falling asleep in the crib, so i used to sit patting him for 1/2 hour. still, during the night he starts jerking and moving and wakes me even when he's still sleeping himself... :-(
about short feeding - we are bottle feeding (i was expressing), so anyway he finishes it in 10 min, and goes on 3 hour EASY. i think it shouldn't matter. 10 min a feed, then 5-10 min on the shoulder until he burps, then 10 min changing nappy - and already 1/2 hour gone. then you have little time for playing with him. when he was younger, sometimes it was 2-2.5 hour till the next feed... as long as you follow the EASY order, things will get right with time.
and we too had the problems with the pacifier... some nights i was up half the time just to keep putting it back... but it too got better! so no despair! :-)