To Obi-Bob, you listen. The Custom Replicas (Jim Key/Scott Brodeen)-produced Nautili are the best available ANYwhere. I know this. I own (and am building) the 66" kit; close buddies also own these kits now built-up in both the 66" and 31" sizes so I've seen them up close and running. Jaw-dropping reproductions. You can't go wrong. Also, specific build advice is available right here on these SubCommittee forums. And Nauti-Bob can help you with gold-standard advice and answers to any questions. I know this too.
Collision Speed, Full!
Sure writing is easy: just sit staring at a blank page until the drops of blood start forming on your forehead.