Very cute cabin! That is a LOT of pine. I think pine is a great choice for a cabin but I also think you can make it a bit more interesting. I like that wall behind the wood fire, that looks like distressed barnboard. Would you consider picking up some of the grey tones from that and "grey-washing" your walls with it. Here is an example: paint washed walls Use a thinned grey paint, or you can use a stain tinted grey, so that you could still see the wood grain and the knots through the colour but you get the tone of the grey on the wood. Then you could do the ceiling either a solid white or a white washed white. I don't see any trim yet on the doors and windows. I think that you could do a solid white on some very plain trim. door and window trim. I'm a fan of this style in a cabin setting. Classic but not fussy.

We used vinyl plank in our cottage and it is unheated in winter. It has been very good so far, but I find it a little cold underfoot even in summer. We also installed engineered hardwood in our cottage and it is fantastic and we are very pleased with it. We went with a distressed finish so that dings and scratches which seem inevitable at a cottage/cabin don't show too much.

For a ceiling fixture....would you consider something that looks a bit more formal?

Large Glass pendant

Or this: Lantern

I like to move away from too much rustic when I'm decorating at the cabin/cottage. Since you have the black wood stove, you can pick up black in your lighting.

For furniture, I'm a fan of leather, because it wears very well and if you get the right finish, leather can stand up to someone sitting on it with a wet bathing suit without staining or marking.

Good luck with the cabin. Enjoy!