You can use Pam's without hunger overhaul... thats a seperate mod. or you can just use both... =)I would add pams, but I wouldn't add it without hunger overhaul - Which I don't want. But if I can find a neat new food mod, then I will add it (I was going to add the subway sandwhich mod, but it was a little too "underwhelming")
As for Decocraft, unlikely, just because I have seen it playing up in some packs (causing long load times, etc.) - Also, I think some of the stuff in it is either tacky, or just not that nice looking.
There is already enhanced inventories, which adds massive storage to chests. But AE is there just for "ease of access" and autocrafting (which can be nice in a later stage, for example needing to craft 2000 stairs for a build)
I may make it so that if you enable minetweaker (to get custom recipes) you will no longer be able to craft the storage part (ME drive/storage drives) but it adds something that some people may need.
Especially if you are going to "complete" every mod, you will most likely have loads of chests filled. And finding stuff could be a massive pain :/
I hate having to cut mining trips short because of inventory space being filled. Yes, i could throw it out. But some people may not, because they want to use it later.
Also, I think they look crap, and just spawn waaaaaaay too much.
If you are playing vanilla+chisel 2 (nothing else) then fine, but vanilla+mods which add ores, not so much
As for Decocraft, i have played a lot with it and never ran into any performance issues or load time. No more then any other mod, I really do feel it fits well into this pack.
As for the stone, you can make 3 /dev/null place the block you want deleted in it, and when you pick up that block... it deletes. I normally use one with cobble, but if dorite, andisite and Granite are in the pack, i just make a few more.