why? why would you help him in private? tomorrow someone else will have the same request, are you going to help them all in private, instead of sharing obvious info publicly?
1. 'Lucera' - yes, they have what you described, but you would have to pay for that.
2. 'a lot of classic chronicles...' - also right, the only difference is kamaels and more features in higher version, but that's not a clean interlude, you would have to implement/remove a lot of things.
there's actually no 'ready to use' free option (clean interlude but classic) and most people are going to try to sell you some garbage.
so what can you do? try classic version before 3.0, you can take mobius files to test everything - maybe you like it as it is and no additional changes would be required, but if you not - the only way is you would have to implement what is missing and remove what is additional.