May i give you an advice? Do what you want but... I really love your work (like everyone here), and i think you prove many time you're are very good at Femshep painting, it could be more interesting for you if you can finish this one, really!
When i have a big picture like this to finish, of course i'm afraid and i'm tired, but i think... When you'll finish it, you'll feel better, and everyone will thanks and congratulate you. Good Luck!