The number of quarries running into it doesnt matter- its more a proof of concept than anything, and its very easily scalable for the crazy amount of quarries you run.
As for dimension jumping your materials; I usually stick to enderchests.
Has anyone tried dropping loose items into a mystcraft portal, and collecting with a redstone engine on an obsidian pipe?
works fine .. but can cause lag when u do so whit too many gates ..
best way is 1 over world gate and all gates link to this one .. the problem only is when u do so DONT enter it
and yes it depens on how many quarrys u have .. since depens on how fast u get rid of the materials .. if u too slow well .. welcome entity lag
enderchests has atm some bugs and for unknown reason they dont accept the size command .. so when u stick more then 1-4 quarrys to 1 ender chest .. well ... ya i know color coding etc can prevent this .. but ender is still buged .. i cant color the middle .. and cant use green blue and yellow
and still shiftclicking stuff into ender cause crash even on pouch so this isnt a good option for me atm ...
http://bg.mytrandir.net/ftb/gate1.png
http://bg.mytrandir.net/ftb/gate2.png
http://bg.mytrandir.net/ftb/quarry1.png
http://bg.mytrandir.net/ftb/gate2.png
http://bg.mytrandir.net/ftb/storagecart.png <- is the cart that takes the stuff from quarry to my sorting (max posibility of space u can add to 1 cart
its just a small version of my original one .. it would take too long to copy it ..
http://bg.mytrandir.net/ftb/recycler.png goes to a mattfab