LOL! Of course another question...
Anyway the tank will be without fish while it cycles. It will have nothing but substrate, decorations and plants. Should I pick up some plant food/fertilizer? This is the plant list:
1 Anubias
2 Java Ferns
2 Crypt Wendtii Green
2 Myrio Green
1 Java Moss Portion Cup
Plus 5 others that I don't yet know what will be.
Most of those plants will absorb the nutrients they need from the water column, via their roots and leaves. So they benefit from using a liquid fertiliser. The exception to that is the the one I've bolded, the crypt Wendtii. There are lots of varieties of crypts, but while they're pretty easy plants and great for beginners, they can also be greedy root feeders, so they really appreciate having a root tab added under them every now and then. Will grow faster and better if they get a root tab.
I wouldn't use fish food in place of root tabs. For one thing, root tabs will have minerals and things that plants need that aren't in fish food. For another, they slowly release their nutrients into the substrate over time, so the plant has food it can use over 1-3 months or so. It wouldn't work that way with fish food (or dead fish...), which will break down and rot much faster, affecting water parameters and then the plant not having that food that it would have with a root tab.
Just a quick warning, there's a well known thing called "crypt melt". Crypts are generally easy, but sometimes they seem to sulk when moved or added to a new tank, and can take some time to re-establish themselves. If a crypt plant goes through this, it drops all it's leaves and seems to melt back to nothing. A lot of folks then think the plant is dead, but that's a mistake! Crypts grow from roots. If this happens to you, keep the roots, and the leaves will grow back! I went through this when I tore down my big tank. I had some massive bunches of crypts that I'd grown from roots from a much older tank, and I moved some to one tank, one to another. The one tank they were fine, the other one, they went through massive crypt melt after being moved, and melted back to nothing but roots. But they've all put out new leaves now and are growing well again.
Another warning - don't cheap out and buy dodgy looking cheap root tabs online. Use a fish-related brand name you can trust, like seachem, flourish, tetra even make some decent plant products. I cheaped out once and bought a dodgy bunch of root tabs from a no-name Chinese seller on amazon, and regretted it when they released a lot of crap into the water and shot my nitites sky high for weeks. Took a long time of large daily water changes and combing through the sand to remove all these tiny yellow balls (since the gelantine capsules dissolve so fast) to rectify it. So stick with known companies for ferts.