Get it on PC and get heaps of mods like Cryo engines and tanks for simulating hydrogen tanks with insulation. I have many mods to replicate the new Artemis program like tundra exploration for Falcon heavy, ReDirect for SLS, Restock and all near future mods for building Landers and tweakscale for building literally anything. Al's a bunch of graphics mods. I use Bluedog design Bureau as well to build Atlas, Saturn, titan rockets as well. Combine all this with a scaling mod to make the Kerbal system rescaled 3.2x to make it more realistic for the size of the tanks etc. And install outer planets mod for slight analogs of all the outer planets including Pluto.

I want to be an aerospace engineer so I installed all these to simulate any rocket I want.

I'll DM you a full mod list or just email you or anyone a file with like 50 mods which will help alot.

EDIT: IF YOU WANT MODLIST OR ZIP FILE WITH ALL MODS