I went the other way, getting a dry suit first but found it quite bulky and inflexible, eventually buying a half decent semi which I ve found more than meets my needs so far for my diving here and abroad.I too don t feel the cold so much so this may help.Mind you, the earliest I used the suit was in early April and the water was that little bit warmer.
Feel free to try my drysuit on one of your next dives , I m a lanky get too
Lee