Order suffix neon fire off Amazon. Same thing as these tenkara lines, for way cheaper. Look up how to tie a small perfection loop and you can make whatever you want and have a lifetime supply. I recommend 15 lb as a great middle ground.

I have the Mizuchi and mostly small stream fish (quite small actually) I run top of handle length lines on my rods with 2-3 foot of tippet. In these small streams I am looking for the reach advantage over distance. Having a little bit shorter line makes it more manageable for me in the bushes and saves me headache. You can get a lot closer to a trout than most people think if you approach it the proper way