This is a futile effort. It is recommended that you use a USB midi device to efficiently transfer midi data. There are tons of inexpensive devices available on the market. Here’s an example Korg NanoKEY
That's a pretty good setup - those little Focusrites are surprisingly good interfaces. What are you looking to record (music, voice overs, etc.)? What DAW will you be using? Do you plan on recording instrumentation of any kind?
My only other thought is research - learn a little about noise cancellation, basic EQ'ing, etc. Some form of midi controller could also turn out to be handy in the near future.
Maybe something like this for on-the-go purposes. Probably great for melodies, not so much for chords
This is on Amazon UK, but you get the idea. It should come with a USB cable which you can use to set it up with Logic.
Took me awhile but I've found 3 different midi keyboards id recommend depending on what you need.
Korg nanokey - This one's solid for traveling or if you have a more mobile setup. https://www.amazon.com/dp/B004M8UZG0/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=BHFPSURENR6T&coliid=I2GZUV8FTNZIPC&psc=1
Alesis V49 - This is the one I'm currently using. I like it because its semi-weighted and fits perfectly with my desktop setup. And if you wanted drum pads but don't want to shell out the money for novation launchpad, these get the job done but certainly aren't the best. I'd highly recommend it though if you want a weighted MIDI keyboard that doesn't take up much space. https://www.amazon.com/gp/product/B00IWWEW20/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
M-audio 88 key - If you want a full keyboard this one's very good. No drum pads but semi-weighted and if you want a full-sized keyboard its very good for the price. https://www.amazon.com/M-Audio-Keystation-Keyboard-Controller-Semi-Weighted/dp/B0006676A0/ref=sr_1_3?s=musical-instruments&ie=UTF8&qid=1493660753&sr=1-3&keywords=maudio+88+key
For a small keyboard I would suggest the nanokey2, but only if you don't mind the keys not feeling like keys lol http://www.amazon.com/Korg-nanoKEY2-Slim-Line-Keyboard-Black/dp/B004M8UZG0
Been working on a lot of music lately but getting a "real job" has been tough.
I'm at the point where I'm applying at gas stations and junk :/
I need to get a job somewhere though, for obvious reasons but also because I wanna try to scrape about $100 together to buy myself a cheap microphone and one of these.