This design can easily make it between 2 planets in the starting area (Nauvis, Fulgora, Gleba and Vulcanus). The main belt on the top right auto balances the ratio of the items, ensuring a 1:1:1 ratio. The 4 furnaces ensures a steady flow of iron plates to deploy to the planet or to supply your ammo lines. Plenty of fuel and oxidiser with the easy ability to modulate how much of each you're using, with the small caveat being that you need some of each when you set off for the very first time.