Well you can surely move the site thats not an issue How to Move Servers and/or Change Directories
That tutorial would cover any of the products. Basically you move the directories and databases and fill in the new proper server paths urls database info.
As far not doing the forum its possible but you would either need to start over or write some type of custom script to import the forum users.
The issue is when integrating with a forum we get the user info from the forum we do not use our users table therefore your users do not exist.
The easiest thing would be to obviously use the forum and reviewpost but do not install wordpress.