Very thorough with all details and pictures so far. Will be checking in on this in the future, keep it up 
Looks very cool. The rasboras will definitely pick off shrimp babies, as for how many I can't say. For a successful colony alongside fish, you should make sure to have plenty of hiding spaces, and a large enough shrimp population before adding fish. Are you really planning on only having/starting with 3 shrimp?
I don't know if the rasboras will eat adults, I'd ask on the shrimp forum if I were you... I think they might be too small. If you're not interested in breeding the shrimp, and the fish won't eat the adults, you can keep them together.Thank you.
I came up with that number just based on what I think would look nice. I rather have a few shrimp which I have to "find" every time than a couple dozen being all over the place.
Since I'll have that refugium I'll just make sure to keep 3 male or female only adults in the main tank.
I guess I'll better keep other fish in the fuge then.
Looks great so far! Are you planning a stand for it or using the table you have it resting on in some of the pictures?
Using the quarantine tank as a display tank is a nice idea but keep in mind that you'll want to be able to easily scoop the fish out when you're ready to transfer them to the main tank so try to avoid any hard-scape that would make that more difficult. Also, any parasites (Ich, worms, etc) that get introduced into the quarantine tank will be hard to completely remove if you have a lot of hardscape/plants in the tank. Finally, some of the best medicines and methods for curing common aquarium diseases can be bad for plants so I would avoid an substrate planted species. Anything mounted to hard-scape could be removed while treating.
edit: Now I see the part about the cabinet.
Just to add to the shrimp thing.
I got shrimp after the fish. I have 50+ Cardinal tetras, 15 platies, 6 C.Sterbai and 5 juvenile BN pleco's. I mainly just wanted the shrimp for clean up crew so got some cheap "wild" Cherry shrimp. Turned out to be pretty interesting shrimp though, there is whites, clear, black, red, yellow and blue in there. Only seen one blueish, but its there
I bought 70 shrimp, and there is at least 50 still there and last time I took a closer look I had at least 4 berried females. If I actually get any increase in population, I doubt it. If the fish don't get the shrimplets, the FX6 will. To start with they where constantly hiding, almost seemed like I lost most of them. But after a while they started to appear more around the tank. I guess the fish just finally realized they where not gonna be able to catch them (healthy shrimp are fast buggers!) and stopped harassing them. Now if you just had, say 10 shrimp. They might be able to wear them out and finally catch them.
So if you don't get a good colonie before fish, you can just add a lot and they should be able to establish if there is enough hiding places/plants.
To add even more to the shrimp thing,
Rasboras will not eat adult shrimp. And if you have plenty of plant cover, you might even have a bunch of shrimplets that survive.
Sent from my iPhone using Tapatalk
I have the same filter except not the WiFi version on my ADA 60P which holds about 12 gallons. I got it for the same reason. I know have an inline CO2 difuser and UV filter on it, so the flow is cut back so much anyway, that I'm glad I got it.I know that the pump is overkill for my 90 x 30 x 30 tank, but if I ever want to upgrade, I won't have to exchange all the equipment.
I have the same filter except not the WiFi version on my ADA 60P which holds about 12 gallons. I got it for the same reason. I know have an inline CO2 difuser and UV filter on it, so the flow is cut back so much anyway, that I'm glad I got it.