Piver Lodestar 35

My new project is a Piver Lodestar 35' trimaran. My first multihull, and before all the critics come out, the price was very right.
I have researched the Lodestar, and one of the big issues appears to be weight outboard of the main hull. As with most of these boats, the cabin does extend to about the middle of the outer amas. I have heard varied opinions from carry nothing, to sails only to it's a cruising boat so who cares, regarding the capacity of the outer amas. Does anyone have any real info on this? I would like to put collapsable water tanks in the outer amas. 160 to 240 pounds per ama does not seem a lot, but the reason I am buying and trying the trimaran is the speed, so if I am not going to be able to get over 10 kts... Well... Plan B. I have already considered weight balance between the tanks, so the only issue is can the boat handle the outboard weight.
For now, my plans include coastal only, but if I like it enough, I may sell my Mono, and do some bluewater with this tri.