another approach you might consider, if money wasnt an issue, you could just try to put together some of the modules that most interest you, that all together would give you the greatest possible ability to explore and experiment with. i tried to put together something like that for you, but including the cost of case it is already 2x over your budget, and im not even sure how to refine this concept fully yet, but this is what i have:
i cannot design your case for you, but good luck.
peace. ✌️
(edit)
oops, the eisei i think its called, i thought was mostly an lfo, because that seemed to be how it was categorized on this site. i was just trying to make a point about choosing the type of modules that make you curious to explore possibilities of everything they offer, as a personal aesthetic choice that i am encouraging o.p. to make for themselves. sorry for not reading the spec sheet on that.
peace