Can i upgrade with no trouble to the latest version?
That can never be guaranteed Yes, you should be able to update to RO CSVI 8.0.0 beta 1, this is the first version with Joomla 4 support. However we always advice to take a backup before updating and to try the update on a copy of the live site first.
Do know there is no official release with Joomla 4 support yet for VirtueMart. They are working on it but this is not ready yet.