I don't think at 4.5 feet you have any chance of staying in the Pamlico as far as Morehead city
. You will have to rejoin the ICW at the Neuse river and then head
for Morehead city through the ICW. By staying in the Pamlico Sound I am assuming you mean to pass east of Cedar Island and into Core
Sound to avoid fixed bridges. The water in the area of the town of Atlantic is very shallow and shoals a lot. I can't get through there drawing 4 feet. You may have the option of going out Ocracoke
inlet, but you'll have to check for local knowlege there first. I've been out it a couple of times but not for more than a year. Last time I was out there I saw 5 feet at one point at high tide. The inlet shoals so much the don't even chart the markers. The last time I went out was before Irene so I would not even take a guess at what the depths are now.
The tide levels on the ICW at core
creek are pretty dependable. If your worried about clearance time your arrival for low tide, it will buy you another foot or two. After going through the core creek bridge you can always take the channel into Beaufort
rather than Morehead City and go through the bascule bridge though again at low tide you should have plenty of room on the Morehead City side.
With regards to the tide at Manteo I would go with the 8 inch number. The tides in the Pamlico system are mostly wind
driven as opposed to lunar because compared to the size of th sound the inlets are very small. My guess would be that the two foot number is very close to Oregon
inlet and not at Manteo. I would probably use that number for planning my transit near the inlet rather than the 4 foot area charted north of the bridge. If you have good S-SW wind
for a couple of days it can put an extra couple of feet in that area. Conversely a couple of days of N-NE winds can take a couple of feet out of it. I just looked at the wind predictions for the next couple of days and it doesn't look like they are going to move a lot of water around so again I would go with the 8 inch number.