Hi Tom,
I know it's always a struggle, no matter how much or little money you have to spend!
The common wisdom is: if your monitoring system and room don't allow you to hear subtle differences, then spending your budget on the fun stuff like high end mics and outboard gear can be a waste since you won't be able to tell if you are making things better or not?
Allen & Heath mixers are pretty good quality, but if you already have a good outboard mic pre (what one do you have?) I wouldn't run it into the Zed14 first, I'd plug it right into the Lavry AD! (unless you are using an effects loop on the mixer or similar?)
I'm not familiar with the Drawmer cmc2 monitor controller so you should research it. Some monitor controllers can color the sound so be choosy on what you get. What monitor speakers do you have?
I wouldn't worry too much about your patch bay unless the contacts are unreliable or something? Are you using reasonably good cabling for everything? If you have cabling like Mogami, Canare, Belden, Gepco, ProCo, Horizon, or similar you should be fine IMHO. Don't spend crazy money on super expensive cables, and even inexpensive cables like Hosa or similar can serve you well and get you recording if it means putting money towards better monitoring and room treatment.
Best of luck!