Warning...
I'm not trying to put you down or discourage you, this is just the reality of one-off manufacturing, it's difficult, time consuming and expensive.
This will come off as curt but it's not meant to be, it's just me trying to keep it as short as I can.
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I had a whole mess here about how long CAD takes and or 3d printing takes... Bottom line, your time estimations are not remotely close.
Sure, you can learn to render a keyboard in 2 weeks, can you design a keyboard case in CAD and be ready to head to a CNC in that time and expect a product that will work, not a chance. Same for a 3d printer, sure you can pull one out of a box and press print, go to a library and let others figure out any problems but learning enough cad to make your own designs work takes time. These are complex tools not toys and they take time to master.
Despite what so many seem to think, you're not going to beat a group buy price.
You don't have a group helping you point out issues and ways to trim little costs here and there, you don't have renders, certainly no cad files, no shops lined up, no skills, no equipment, no prototypes... And certainly not the benefit of bulk, which can literally cut the price in half.
If you had a large enough CNC mill at your disposal and the other necessary skills, sure, you could make it at that price and within a reasonable time frame, but that's literally the only way you could. Unless you're in China you guys are looking at closer to $800 (EACH) without a PCB or anodizing and that doesn't even guarantee you a fully functional case only something that resembles one (I aimed a bit high due to skill). You'll probably need 2 or 3 before it works, maybe a 3rd or 4th (all at full price) if you expect something like you would get from a $400 group buy. Only then can you get your two production ones at a slightly reduced price, maybe $600 or $700 (again that's for each one) after some optimizations and teeny bulk discount. After that you still need finish, hardware, PCB, electronics, soldering and more, so expect another $200 at bare minimum. With those numbers you can expect anywhere from $2000 to $3800 depending on how fickle you are and anywhere from 6-12 months. Honestly, even this may be optimistic and the faster you want it, the more expensive it will be. Keep in mind, the finish and some design elements could make it a lot higher or a bit lower. Little changes can have a huge price impact.
If you lengthen your time frame, say 12-24 months, you could buy a printer and digital caliper and take the time to truly figure out CAD and 3d printing, read up on optimizing your design for CNC, and in doing so you could cut all of this by maybe by 1/3rd, even after paying for a printer because you can verify your design before going to a cnc shop (fewer prototypes). However it's still going to be a mad dash to do in that time because there is just simply a lot to learn in multiple specialties. Your friends experience will help, but only so much, it's just simply going to be costly in multiple ways.
If you do go through with it though, good luck and keep us updated.
I know some people are going to say how that's way too much and how some other person did it for way less. Remember this is for two keyboards, by two people with little to no skill who are outsourcing everything. It doesn't compare to a group buy where you split the R&D or your cousin who did it on his CNC at work in his spare time. Not to mention prices are up, shortages exist.