Check your math

Actually, the exact title for this post should, "Check their math."

Version #2 of my Short Sleeve Swirl Cardi (the first one went really wrong too but we won't talk about that):



Since the demise of the first version, I decided to use a pattern from the DROPS design website. I really like almost all their designs, even if the English translation of the patterns are sometime, how should I say this? Interesting, meaning I cannot understand what the heck they are saying. But that was not the problem, the problem was the math, that, I believe, should work the same all over the world.
I looked at the pattern and I decided to make the size XL - 110 cm = 43".
First mistake: I did not notice that in the schematic it was indicated that the XL has a bust of 43" and hips of 130 cm = 52". Now, my hips are not 52", they are actually narrow than my bust.
Second (huge) mistake: I did not check their math. For the XL size I was instructed to cast on 288 sts: at a 5.25 sts per inch, that gave me 55" circumference for the hips and, at 6.25 sts per inch, 46" circumference for the bust.
Uhm ...... to the frog pond (again!)
My dilemma is now this: do I re-size correctly this pattern that I like (most if it, I changed the sleeves because they were coming out really weird and I made them raglan style) or make something else entirely?
In the meantime, I made a hat with some handspun of mine: