Best way to building your walls?
Okay. I would think by now I should know this, or have read this somewhere & saved the info, but. What is the best, most cost effective way, to building up your walls for def around your castle?
Simply hitting the good old "edit" button, then clicking "upgrade", gives you a cheaper, discount price, but, it will only go up to the next level beyond what you are upgrading, i.e. if you hit upgrade, on a level 2 wall, it will only upgrade to level 3, even if you have level 5 unlocked. Granted now, you get the discount price, but, doing this, to me, looks like it may cost a fortune.
Then, there is the option of "destroying" the wall, gate, etc., then building the highest level you have available, which, will cost more now, but, in the long run is it cheaper?
Curious on what more experienced players say on this, as I am at level 4, close to level 5 unlocked, & my walls look like a hodge podge of levels. Level 4 gates, 4 corner towers & sentry's level 4, part of my walls are level 3, but I just realized the other day, I forgot to upgrade the other sections of my walls, & my other towers/sentry's before, so, a bunch of them are at level 1 or 2. Am I better to just tear down these low levels I forgot like a dummy, & bump them to 4 or 5 when it is unlocked, or, just go through the cheaper, slower, upgrade process one level at a time? I recall many, many moons ago reading something on this, but don't remember where, or what it said.
Thanks for the advice in advance.