I always go Offensive/Defensive as first idea, second Exploration (I do agree influence is a good first idea group if you want to annex your vassals ASAP).
Basically kick the English of the continent, wait for Burgundian King to die, or else DoW them and rape them to make that happen sooner. Go for Brittany, Provence (you can diplo-vassalize Liege & Lorraine and later feed them with HRE territories). French current borders? No, no, my friend! We all know where the French perfect border lays. Rhine. While you're waiting for your AE to pacify, go Exploration, colonize Canada, TC etc. I'd personally go for Africa too, stopping everyone else to get close to French India, China, Indochina, Indonesia, etc etc