You can set up camp just before the first Miner Groundfuse spawn point. If you set up just out of aggro range of the PH, you will be safe from the mobs behind you. It looks very tight but aggro range is rather small so it works. There is room to place a campfire as well. You can easily kill everything in the caves beyond the first PH in about 7 minutes. With your extra time you could pull towards the Master Kizzixik spawns (respawn is 15 minutes). As mentioned, the mob seems a bit on the rare side.