What should that help? Do you want an honest opinion about this rooster?
Asking for a better defense is like asking for a more powerful car engine when 3 of the 4 tires are missing, the gear is broken and the air condition only heats during summer. Yes you will have more power but the car won’t drive.
The same here using a better defense won’t do you any good. A good defense is worthless and gain you nothing if you can’t raid on offense at that lvl.
You are missing elemental parts in your rooster.
You don’t have 3* heroes, you can’t participate in 1/3rd of tournaments and challenge events loosing a lot of loot.
You don’t have a broad variety of 4* heroes, so I’m not sure if you can finish epic challenge events or not, but for tournaments that’s probably not enough.
You have maybe if we count very friendly 3 teams for a war, from how far some 5* are lvled I’m guessing you are playing some time, so you should be able to have more than 3 teams for a war. Again you are missing 3* and 4* heroes. In the time were you lvled some of those 5* to 3.70 were they are probably stuck for a long time because you miss a lot of loot, you could have leveled with ease 30 3*/4* heroes for the War, doing far better than with unleveled 5*.
You are missing heroes to participate in tavern of legends and Ninja tower which would give you loot.
You are missing some key features, some good synergy. You have 1 dispeller leveled, you have 1 def down leveled, with those 2 red 5* you have some cleaners, but not for 3* and 4*. With all that missing you can’t really raid successfully in the cup area where a good defense would put you.
If you want to take my advice, forget your defense. Forget those 5* heroes for a while, you want get happy with them anyway at the moment.
Start leveling 3* heroes, maybe 3 each color for the beginning, there are a lot of threads in the forum who is worth leveling. You will do much better in wars and can participate in tournaments and events leading to more loot and faster leveling.
After that the same number of 4* heroes, healers, dispeller, cleaner, def down should have priority there, this will lead to far better results in raiding, war and with titans and will let you finish challenge event, participate useful in tournaments and alow you to finish most quests. Resulting in far more loot and making leveling far more easy.
After that you can make plans for a better defense, and will also have more success on offense.
If you want a working defense regardless what you could try Richard tank, Zimt and khiona beside and maybe owl or joon on one wing and lianna on the other, or if you already have hero academy maybe something like @Gimliv suggested.
But I would really think about leveling 3* and 4* before trying to max that def. Good luck however you decide