I don't see any wrong in doing this, i mean if you don't mind shelling out the cash then whats the problem?
However.
Graal is at a point where I, personally, would not buy a server because i see no point what so ever of servers. It's clear graal is never going to get anything new development wise, unless we the players make it ourselves (which at that point i would just make my own damn game).
But with that aside i say go for it if you want to. I wish you all the luck in the world
