well, it's not going to be as good as the real Equal-i-zer, since it has 4-point sway control and the E2 has 2-point sway control.
and you can get the real 4-point Equalizer for $429 w/free shipping from RVW. and it's not hard to install.
you might want to also check their E2 prices.
but, i do like Equalizer's products and i think you'll be fine with the E2. IMHO, for the extra money, i would go with the 4-point one.
by the way, never go by fictional "dry" tongue weights or "dry" trailer weights.
with water, propane, battery and cargo, the tongue weight will be closer to 600lbs.
and the trailer will weigh about 400lbs. more than its "dry" weight, before water, propane and cargo.