Hi Humanoid01,
By the way, last week I met Humanoid03, a brother or cousin of yours? ;-) Just pulling your leg ;-)
Personally I feel you got a bit too many "sexy looking modules" ;-) Some of them are very nice, I will believe that, but perhaps you should keep that for later when you have more experience with your rack; up to you of course. Think of ditching the Mordax - Data (yes it's nice but straight away buying this one? Is a bit too early I believe), the Plasma drive from Erica Synths? It's pretty large and to start with in a rack, mwah... not so sure, keep that on your wish list, is my advice; and perhaps a few more of that kind of modules.
I would consider one more EG and you might want to consider one more filter to start with. Add also one more empty row to this rack to have some space for the (near) future.
It's easier and better to have an Audio I/O module to "export" your audio out of your rack to your external mixer. From the external mixer take one of the outputs to your speakers. Eurorack modules, the audio signals are of a higher level then audio line levels; so keep that in mind in case you decide not to go for an audio module. I am using the Intellijel Audio I/O and I am pretty happy with it, the only thing it doesn't have is a headphones output. If you need that consider the Befaco - Out v3.
That should do it for the beginning, after that build up experience, at just your opinion on certain matters and then see if those items I asked you to leave it out first, if you still want to have them added. Good luck with it and have fun with modular! Kind regards, Garfield Modular.
For review reports of Eurorack modules, please refer to https://garfieldmodular.net/ for PDF formatted downloads