OK... so this is a funky build I know...
Frame: I chose this frame because I am tired of paying for ~$100 frames. This frame is a $20 frame with sets of replaceable arms for $5.99. It is styled similar to the classic QAV-R/Alien/AstroX... The carbon is decent and comes pre-camphered. IMPORTANT: this frames camera mount is too thin for a runcam swift or RR version, the mini arrow from foxeer fits it perfectly.

FC: I had this omnibus F4 lying around that I was going to put on a racer last year, never got around to using it. Downside is I didn't use a 4-in-1 esc so I need a pdb, which I had an armattan pdb lying around from when I got my chameleon a while ago.

ESC: I like spedix. Good quality and price is right.

Motors: I got two sets of steele motors when I built my rooster. I was going to try to fleet out on the rooster frame, but I can get 4-5 frames for the price of one...so yeah... steele motors are going to go on the eclipses.

FPV Stuff: The foxeer mini is the correct width to fit into the camera mount on this frame, and is also big enough to fit a gopro style lens for wider fov. I like and trust the TBS unify HV...

RX: XM+ is the goto frsky rx, I have a few lying around already. I will probably upgrade to a TBS nano crossfire rx at some point, but for now this works.

GoPro Couch Mount: Contact BMC3D and he can print you out one that fits the eclipse. I had him make me some 30deg and 42deg couch mounts for this frame. note that there isn't a good place to velcro for a foam style mount, so a 3d printed mount just for the strap to hold the gopro is needed. I highly recommend BMC3D, the print is super high quality and super fast to get me this part on a custom order.