I agree with you, Red at IMPs, I am hands down going to game. The price is too much for not bidding 3NT but making it. As I like to hide the stronger hand in NT, I'll ALWAYS bid 1♥ as long as the top card is an 8 or higher. While you only have 6 HCP, they are in partner's suits; I also believe there's an 8 card ♦ suit that will suit you well for that extra trick needed. So even non-vulnerable at MPs I am going for game.