Ok, then I would start with 43xl and 90 hr-w. Again, not a lot of movements with the 43, and you can't add a tilt adapter to it. If you can't find the old 90hr-w the 100hr-s is in the price range but no tilt and a smaller image circle.
If you want more movements then you want the 40hr. And if you need more focal lengths, then 72xl (Alpa now calls this the 75xl) and the 120 in place of the 90/100. But you might not find these for < $4000€, especially the 40 and 120. Note that a few years ago Alpa changed the ring color of the Rodi's. For example the 40hr used to have a blue ring, now they are all gold. They are the same lens so you might find a blue ring for a few less $$.
Of course your starting point really depends on what focal lengths you want to build around. One of the problems with The 43/100 is that if you want to upgrade later to lenses with more movements or that can tilt, you have to buy and resell. I started with the 43 and 100. I don't have either one any more for that reason. But I miss them both; wish I hadn't sold them. And at f/4, the 100 makes a great portrait lens!
Anything you want to tilt needs to be the short barrel, or "SB" version. Then you can add in the tilt adapter.
Dave