Sure you can continue your Work with your Project.
Just use another Main Node, which can be set in the Source Code.
You can run your own Mainnode, but you need 24/7 Uptime.
If you start your Wallet at First time, it doesn't know which peers to use.
Thats why you insert a Mainnode, it will Connect with First Launch to Mainnode and it will sync Blockchain from the Mainnode.
It will try to get the other Peers which are connected with the Main Node, and it will save this other Peers and try to connect to them.
So the Main Node is every time the First Peer which will connects to you if you start the wallet.
I hope it was helpful
Thanks and have a nice day