I'm currently putting together a business plan so I can pitch a business loan. My main experience is with audio production, but this loan is for video editing; so naturally I am getting confused with what might cause slowdowns at my desk, and what will hinder mobile editing. The loan would be used for a new 13" MBP TB model (16GB/512GB, 3.5GHz i7), and all other necessary hardware, so the budget isn't entirely set right now. I do, however, want to attempt to keep everything well below the $5k mark concerning hardware. Then again, I won't argue with practicality. I will be using FCPX, Motion, and After Effects, for video work on the MBP. I'll likely be limiting my projects to 4K resolution, as my target markets shouldn't have a need for anything larger. Below is what I have in my head for hardware use, but I would love input from experienced users. I'm new to Macs, grew up with Windows, and will always be an audio guy deep down, so excuse the ignorance: To start myself off, I currently have use of a cMP 4,1 that I plan to load up with HDDs in RAID 1. This would house all the data I am working with, and act as my cold storage in the short term. Eventually, I would upgrade the drives to SSDs and run a RAID 0. The main reason I want hang onto this tower is to act as a temporary NAS, as well as aid the MBP when running Compressor. For the MBP, I was thinking of using OWC's 2TB Buffalo Thunderbolt drive as mobile storage. I've seen some mentions of less responsive skimming while editing 4K content off of Thunderbolt 3 drives, but I'm curious if that's really much of a concern? Is there much I should even worry about with this? Also, while I don't plan to edit on the location of a shoot, I'd hate to refuse the work because I didn't spend the extra for proper mobile storage. I would also use it for whenever I feel like working outside my home, but I doubt this aspect would be as much of a worry. I just need enough to get me by when I need a change of scenery, or for the occasional demo/minor fix on the spot for a client. A shove in the right direction from some of the experienced editors would be great. Backtracking a little bit, I'm also having a little mental struggle with editing off the HDDs in the cMP over ethernet via the MBP. As an audio guy, my solution is: use an ethernet adapter with the MBP, wire it up to the cMP, and point my libraries to the cMP drives. I never had problems pulling all of my samples over USB 2.0 when producing music; then again, that's peanuts compared to 4K editing (USB 2.0 should handle up to 198 WAV samples, in theory, so I'm in a different world here). Would 4K editing over ethernet even be a potential issue? I would think so, given it's gigabit ethernet, and this chart provided by VashiVisuals doesn't look too promising for what I'm wanting to do. Should I look into having multiple external drives, or buying a desktop RAID and only use the cMP for my cold storage? I've learned a good amount just from trying to make this post worthwhile, and it seems like I'm a little misguided. Maybe I'll be okay, but I'd rather be safe. I doubt I'll need what I desire within the first year of business, but I like overkill; and I've found overkill is always good for business. Thanks in advance for any advice!