Well, I am fairly new, only been playing 6 months. But I am already at 125k and about to start Woodelves. I dont try to get to the top of the Spire
because my FS doesnt , so it would be pointless. But I typically go to the 2cd boss. And my Tournament average is 3200 plus. I have been told many times not to take the optional squad upgrades, but so far, every time I do, I get better at fighting. I started playing because I like the manual fighting system, but once you are hitting 3 pages of tents for the tournament, that is tedious. So I do more auto fighting now, and then it is becomes very important to pick the right combination of troops. I dont try to to all 6 rounds. I play for the maximum number of tents, because 30 tents on the first round is easier than 15 tents for two. Etc. Etc. At a 3200 plus average I typically hit 27 tents for two rounds, and then I play only the first 9 tents thru round 5.
The other thing I do, is when I reach the point I cant fight, I limit myself to catering 4 tents each time, so I can get the higher round tents for the KP and Runes. It works. My use of goods is a minimum, allowing me to use it for upgrades. I do well in the Spire and the Tourney, and my city is growing fast.