In terms of combos, anything with the Freikorps box set is good for a beginner. It's an easy army to use with a lot of good synergy and it's not very complex (simply stay together and blast away). The Viktorias aren't bad for a beginner either, as others as said as long as you realise they can be quite squishy. As for Leveticus, I started with him (and Von Schill) and I didn't have too many problems. Be aware that he requires some things outside of box set (namely another set of Hollow waifs and a Desolation engine) but he is still quite fun. I would also say Hoffman isn't nearly as difficult as he sounds and can be fine for a beginner (my buddy started him instead). If you want to try out Hoffman, make sure to buy a peacekeeper first as well. Ramos is also an excellent choice and his box set comes with a ton of points. All your choices seem good, and don't worry too much about choosing a more complicated master early on, in my opinion it just means "easy to learn" masters are extremely easy for you to learn.