Good review and pics Falcon.

Have you looked into treating your field clothes with permethrin? It is very effective in killing, not repelling, bugs and it has essentially no health effects on humans. Teamed up with DEET and proper clothing it is a good system.

For strange bureaucratic reasons, it is a little hard to find permethrin at retail with formulations over 0.5%. However I have read somewhere that you can get permethrin concentrations at 1-10% from veterinary sources.

Regarding DEET, consider the more advanced DEET formulations that use less DEET but in a time release formulation. 3M UltraThon has only about 35% DEET but it is a time release lotion. You get good protection for a longer time with less DEET involved.