I will create several offline wallets from the virtual machine and send the bitcoins to them from the old wallet using my main machine as being some how paranoid here
I got that part. What I meant was asking if you are going to spend those coins often. Once you move your wallet from the offline machine to your main one, your wallet will be completely exposed. You can mitigate that by preparing transactions on the online machine, signing them on the offline one and moving the signed transaction to any online PC. This won't expose your private keys. Also, I don't think that using virtual machines is a good idea. If your host is compromised, so are your VMs. Using a separate computer would be safer.
here is what i have in mind
i already have the old wallet.dat on several mediums as a backup
i want to divide the amount on that old wallet.dat into several smaller ones, to be less paranoid about working with a single wallet in case if something went wrong then i am rekt plus i want to spend some of the coins.
i will make the whole process in a offline medium as you have read what i am trying to do, after i finish, i will backup those wallets as i used to do.
what will remain on the pc is the amount i want to spend
i stressed on everything must be able to work offline that in case even if i am already hacked, i am not in danger of losing anything except the coins i want to spend which will always be on the machine whatever it's online or offline.
am i missing anything here in the above sentence ?