It really depends on what you wanna do. If you don't wanna fight other players, just make a bunch of balanced troop buildings. If you wanna fight other players, you're gonna want some towers.
Question about growing. Currently I have 13 lv. 3 forges, 2 lv 3 guilds and the castle. My next land is 600m. My question is for faster growth should I Upgrade my guilds to lv4 or should I put down a new land and another forge lv3? Now my intentions are to grow to an attack build for eb's. seeking the best way to do so. Thank you
Buy land and build beastiaries until your land price is higher than 900m. Then do the guild upgrades. I recommend having 7 guilds on your lowlands and the first 4 highlands too. Forges arent as good as beastiaries, I would recommend changing some over too.
As Mango said. Don't replace those forges though with beastiaries, you'll replace them with T4 (circle of elements) when hitting highlands in a few days. Don't build any T3 buildings but stick to forges/beastiaries and guilds till you unlock T4 at 25 lands (just a waste of gold).
No, but to check hit an epic battle at full troops, buy a cheap ally, and hit the eb again when your troops regen. If there is any difference in plunder you aren't at MP.