I'd up it to 70-80. You don't need more than 1 stack for most things unless you're hoarding for crafting for trophies. It's one of those things that you can get by without upping it, but then you really have to maintain your inventory to an OCD level. Same deal with equipment eventually. Plus as we progress, only more materials will be added.
For friend list stuff, some may not be able to invite. If you use FB friends you end up getting locked out of adding people because the game thinks you're over cap, though you're still able to accept friend requests if someone sends you one.
You can skip this and complete it in an area on the 2nd island, forget the zones name off hand.
Derp double too? Editted post and created a new post somehow.
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