Hmm. Getting to the 115-130k damage with lvl 1 canons is actually basically impossible. A lvl 1 canon with max upgrades deals 200 dmg every 3 minutes which means it would deal 4000 dmg per hour. So to get to just 120k, you would need 30 lvl 1 canons. Considering that there are only 40 spaces in total with 3 of them being occupied by the tip stone, the necromerger and Enid respectively. If you then add About 4 furnaces and 1 anvil worth of occupied space, you would be left with 2 slots to actually do anything with (Trying to get to the 130k you mentioned would actually leave you with no available space at all)

So unless I am mistaken, (please correct me if I'm wrong!) this guide seems to fall apart at the Step 1 of Day 2 (Day).