How do you like the following idea: Avalon builds a galley next. The settler from Tintagel can reach the tundra isthmus in 2 turns! Afterwards the galley is ready for operations along the east coast... M-H or L-E can build the settler for D-Day. Glastonbury builds granary, 2 settlers for the west coast and then workers. Carlion builds Great Library (gets pumped up to size by workers from Glastonbury, so doesn't need a gran). Or Carlion builds a barracks and more units. But I think in the long run, we will suffer losses, if we move forwards, especially if they have Feudalism now. So we should do as much damage as we can now. If we manage to get their iron, we can continue, but if not, we will probably need to play defensive again, build up our empire and wait for Knights. Our advantage is, that they can't revolt, as long as we are still at war... so the longer the war lasts, the further they will fall behind. We only need to avoid losses. But let's first see, whether we can get at their iron.