SD,
Boeing-Vertol built Tandem Rotor aircraft for the Navy/Marine Corps for over fifty years....and they seemed to serve well. All the technical issues you mentioned are not insurmountable.
As to whether the 47 can meet the operational needs is a separate issue.
For sure one Army Chinook unit operates off Navy Ships on a frequent basis....so it can be done as it is now....and with the technical modifications then it only gets easier.
The Navy has modified its Ship building specifications to accommodate the Osprey so it could...if necessary do the same for inclusion of the Chinook into the aircraft fleet mix.
The Law of Unintended Consequences poses real challenges to changing horses in the middle of the stream however.