We are using all the extra rules with a few exceptions with ones we don't subscribe to, but hey that applies to most Wargamers!
To help get our knowledge up to speed we are putting together our own QRS that has all the extra rules on there to speed referencing them, plus a few others that we have added.
We have not found it time consuming at all and if anything we get through the turns incorporating them because that is the way we play and are becoming unconsciously competent with little reference to the sheet or the book which I would suggest is the sign of a good set of rules. We really like the extra simulation the added rules give to the game and wouldn't really think of playing the basic set.
Once the test are complete which will be the case this week I will publish the QRS we have complied. I it's want to make sure it is complete and nothing pops up in this final test game.