its been a good 5 or more years since i've been on 533. if they haven't repaved it since.. look out. it'll batter the suspension of a street bike if you aren't cautious. it would be best to do on a dual sport. further reason to take slow care are the many tight corners where you can expect to see logging trucks using 3/4 of the hwy just to make the super tight corners. Regretted riding my sportbike on it. it can be done but its a slow very bumpy ride.
edit: few nice trout lakes along 533 where you might find a spot to camp (free). catch pickerel in mattawa off the dock. catching trout in the hwy 533 lakes is more difficult.
or get on hwy 63 towards quebec, just before the quebec border where you cross over the ottawa river you can also catch pickerel right off the bridge (just below the dam). you can also camp free. there are also some even nicer camping spots along the ottawa river, downstream from the bridge /dam (different spots for a few kms - you can see them from 63). the town of timiscaming quebec is 3 minutes from the bridge / dam. hwy 63 is a nice ride from n.bay (about an hour from dam/bridge). are you in the bush on hwy 63? seen deer, moose, a holy grail lynx, and the holy grail of holy grails - an eastern cougar - all off hwy 63, YEAH BABY I can't stop smiling thinkin about it.
I've seen two lynx in my life, the previously mentioned one, and another outside elliot lake. some old timers told me a trapper could spend half their life in the bush and never see a live lynx.