Need advice from Niagara 35 owners

[robfuse]

Dear Niagara 35 owners, I'm getting close to choice my next boat. One of them is 1981 Niagara 35. Boat is very clean and well maintained. Surveyed in July 2017. Surveyor find few areas of concern. What do you think about it?
1. Hull low humidity
2. Rudder-A vacuum about 3' round on the port side of the lower part. Recommended epoxy injection-?
3.Bridge-low humidity on the part of the bridge . Medium/raise the starboard side of the hatch, between the butt and the chain plate to starboard, on the lower stanchion and the genoa rail.
A place with delamination observed or an old repair was made on starboard hatch and some small voids on the forward pass.
4. Deck-House- humidity low.Three empty about 3-4' round observed on the deckhouse.( no recommendation- monitoring suggested.
Besides everything looks good ( few fixable things) Overall condition-Average.
This is freshwater boat.
I appreciate any insights. Thank you all.
Robert