Should I upgrade to Sony A7ii or spend my money elsewhere?

I am looking for the infinite wisdom of Tacomaworld. I'm not really sure if I should upgrade my mirrorless, or spend money on something else.

I currently have a Sony Nex-5t which I absolutely love. I really like how small it is, battery life is excellent, and it is great for my currently style of shooting, which is day hikes and walk around.

I pair it with a Sony 24mm f1.8 and a Sony 55-200mm f4-5.6 when I do my hikes or walk around and it pretty much covers everything I want to shoot. It's just that it's old technology and the 5 axis stability of the Sony A7ii really intrigues me, and the fact that it is water and dust resistant

My thought about upgrading comes from I just got back from a 5 day vacation where I car camped the entire time. Staying in my Marmot Limelite 3P tent is okay, but it's low to the ground and pretty cramped. I'm thinking of upgrading to a taller, more roomy tent such as the Rei Kingdom 4, but the money for this upgrade, could go towards other upgrades as well such as a new mirrorless, or new lenses.

I'm not sure if I should put the money into a new body, or into the tent which would motivate me to go and shoot since I would be more comfortable outdoors.

What do you say?

Here are some pictures from my vacation:

Folsom Lake Sacramento, CA




Yosemite









Hearst Castle





Morro Bay