Not new $$. I spent about $2100 for the same setup, and associated (necessary) goodies like shure vert mount, shockmounts, good mic cables, and power for the UA5 (don't forget you're going to need power). That's a problem, as even a cheap battery solution will cost about $50 (with 9.6v RC packs).
You could either find a pair of used M300's and maybe pull it off...
Or if I were you I'd:
$850 MG M300
$200 used AD-20/Inbox (they're all over the place, easy to find)
$300 NJB3
$50 NJB3 extra batt
$50 bogen 3333
$150 shure vert mount and 2 shockmounts
Replace the AD20 in a year or so when you can afford it, you'll sell it for what you paid. If you find the M300's used, you'll come in at the low end of your budget.