To this I can only add one bit: Get a good PVS-14 and learn how to use it. That includes utilization of both helmet and weapons mounts. Bring spare batteries. Learn how to operate 100% passively. And once in a while switch the thing off in the middle of your training session, adapt, and complete the exercise.
Here in swamp country, I would also advise insect repellent, a good machete and a sidearm in case you run into some of the, er, 'bigger critters', particularly during water crossings.
Swamps are great passive, natural land barriers to all but the hardiest and most knowledgeable.
Yes, by all means get quality NV when you can afford it, but don’t let the lack of it stop you from becoming a “natural” night fighter the old fashioned way.
Once you are, NODs, as available, will be a big help and force multiplier.
But don’t anybody make the mistake of buying a NOD and considering himself a night fighter, as in, “check that qual off my list, I have a NOD.” That would be very stupid, because night fighting has many many aspects, and amplified vision is just one.
(I am specifically NOT referring to you. As your posts make clear, you must get out and train in all terrain.)
BTTT
PVS-14 BTTT !