70. Make the walls of your base on a PvP server out of RFTools shield blocks set to (a) block and damage anyone and anything that isn't you (so you can walk through them unharmed, but nobody else can walk through them, or even touch them without being damaged) and (b) be as close to invisible as possible (which may be to set the camouflage to TiCo clear glass, if there's not an actual invisibility setting).
71. Build said base in an RFTools dimension that is completely blocked off from the outside world other than a single private Matter Receiver. This means you should put the Dimension Builder in your base, too (after building the dimension, of course), and make absolutely certain it doesn't run out of power, because if it does, you'll instantly die whenever you try to enter the dimension, so you'll have trouble restarting it.