I also have a micro setup. It’s a free to play lvl 203 and I have my kill island on island two. (Second one from den) from left to right I have farm, farm, mill, I’ve turret, Mill, ice turret for shielding my towers, to slow down hunter ammo regen, and it packs a good punch and costs no embers. Then on island one I have a fire turret, an earth flak, (ads HP to surrounding towers that doesn’t disappear even if destroyed, then red mage in middle, and a blue up front with the only flak I will ever be able to afford as a free to play. On the seagazer I have a perch with an atlas defender with decent gear with a lvl ten elite shield. On that perch island three, I have three mages, two reds and a blue, lvled just enough to get off a shot but not so strong they can be sanded without being destroyed thus preventing a potential rage anchor. The blue is in the front with the other two in the back row which makes killing two in one shot a lot harder. Also you want the blue up front so that no one can use evasion on you in atlas to fly your base faster. This is a common tactic and you need to have a blue mage every couple islands (up to five) this way they can’t cloak over a blue and leave it for a backer and they are forced to ill it. This also makes it take longer to get you in pvp if they have to fly you entire base.
Edit, this alt of mine, is almost an experimental acc. In that you can really see the difference ones main acc grows by comparison, after spending. Also, I know you said you don’t want turrets and you don’t have to use turrets like I do, but you get the idea.
This is just my humble opinion I don’t claim to be the best base builder but if anything I said gave you any ideas then awesome
Good luck dragon lord