How about using a private forum for secure communications?  SSL protects privacy just as well as PGP.  I think most forum software can be configured to hide posts & threads from public viewing.  One advantage to this approach over using encrypted email is persistent and organisable content to allow collaborative discussion and planning also PMs can be used for email like communication anyway.  One disadvantage will be hosting and maintenance costs but those are not so great especially for a very small forum just being used by the company agents.  I could help with setting that up, I already have a VPS running.  

On the other matters you asked me about:
- My laptop does have an SD card reader.
- MicroSDXC cards are 35 GBP and upwards in the UK.
- Libertarian Logistics: glad to help with that in anyway I can until you find someone better

Look forward to working with you and I can't wait to make a start.