Items And Loot Archive

I've created what I feel is a great hunting template and wanted to beef him up a couple more times in order to have an advantage with solo hunting while force grinding. His template is Master Pistols, Master Rifles, Carbines 0-4-0-0. For healing, I'm using stims and have another character on the server that is a Master Doc, so I group the two together and the Doc runs a macro to keep shooting up my guy with bacta every 10 seconds. Works well for most creatures, but now I'm thinking of hunting on a bigger scale (we'll see just how high).

Here are my questions:

1. If I have multiple health buff crystals, can I stack the benefits? So if I have three, will I be able to get +6000 health?

2. If I have two +10 range arms, do those benefits stack? Would I be able to suddenly shoot 85m with my rifles?