Vlad,
Chiming in for Steve. First, his boat is a great intro to the class. Unfortunately, 215lbs is on the upper edge for classic A-Cat sailing. Mischa Heemskerk makes it work at 225lbs or so but he is a pro and tends to do better at windy venues, and on foiling boats which do a better job translating righting moment to speed.
I think Steve's boat is great for anyone under 185lbs or so. For an intro boat, the Marstrom A-Cat is really what you want. For a more competitive ride, the 2012-2015 DNA's like Connie and Phil have are pretty ideal for the bigger guys , until you get into the new boats like the DNA Classic circa 2019 (I believe you can still buy this hull new).
Good luck!
-Sam