Now what is next ... Who is a staking expert? What is more effective for stabilizing the weak COV network - one node with 100 COV, or two nodes with 50 COV - or is it essentially the same? Because if I actually receive some more donations on that address, I could afford to rent another VPS droplet, and send half of the funds there. Then there would be 2 nodes which are staking 24/7. But only if that really helps.
If the same person controls the coins, it doesn't matter if you split it up between nodes. For simplicity, you should have them all on the same node. It's a good idea to have a backup of the node somewhere in case the main node goes down for some reason. If you have enough coins (about 150 COV or so), you could split them into 20 transactions. In 8 hours they would start splitting to 40 on their own. 8 hours after that 160. With 320 transactions, you get 1 block every 5 minutes or so, which is enough to carry the network. The money you have already received from spartak could carry the network. Add this to whoever else is staking and it will move along nicely. It would take about 2 days to get there if you split into 20 transactions right now.
Staking with 0.5% of the money supply in this way wouldn't be "centralized" because you have 95.5% of the rest of the money to compete with you for blocks.