Yes, even you can stake the rest of the amount you make can be a stake in the same validator, even I am doing the same thing because it will definitely help increase your holding as long as possible.
Thanks for reminding me of this! I will definitely stake again my rewards when I reach my target figure, and hopefully could do it by next week.

~snip~
For best chance of contacting the core team and lay down your proposal, I think it would be good if you could visit their social media channels
https://www.minter.network/#social and contact any admin present there.

You can configure the auto-delegation function to a specific node, so that with the required number of Bips on the balance, the system itself delegates them for you. I have been using this for a long time and dont worry that I need to monitor when there will be a certain balance.