Sounds like you'll be getting into Manasquan on Sunday, weather permitting... Make sure you know what the current is doing before getting too close to the Brielle RR bridge, it can run pretty good thru there, with a slight bit of a side set...
with your boat, I'd suggest trying to hit the canal not too far either side of slack current. First time thru the canal, you don't want to be riding the max flood, it can be a bit hairy if you have to wait on the bridges... On the other hand, if you hit it at max ebb, it will be a LONG trip thru there, the current runs pretty good...
For Sunday, Max Flood is at 0725, Slack water at 1000, Max Ebb at 1445, and slack again at 1705...
Just before you enter the canal, it's prudent to give the first bridge a call. It's called the Route 88 bridge. The bridgetenders in the canal tend to be pretty good, always aware of what the current is doing, and the difficulties it can pose for sailboats. But Rt. 88 is a major thoroughfare, and it's on the route to a nearby hospital, so sometimes he might actually have to abort an opening for ambulance traffic. So, it's worth calling before proceeding into the canal. After you clear that bridge, he'll usually advise the next bridge - called the Lovelandtown bridge - that you're on your way... Also, the bridges in the canal are both lift bridges, so it helps if you let them know how much clearance you need, and ask them to give you the go ahead - no matter what your mast height, those damn things NEVER look like they've been raised high enough...
There are very few boats out on the water down here yet, so traffic even on a weekend shouldn't be too bad... But, if you do have to wait or mill around at any of the bridges, be advised that the overwhelming percentage of powerboaters around here are pretty clueless and lacking in courtesy - particularly as regards sailboats. They tend to have no understanding of your lack of speed or maneuverability, so don't expect anyone to cut you any slack in tight quarters, just 'drive defensively'...
Good luck, enjoy the ride...