Abbas, glad to help. It gives me a chuckle to see the 3's in the handle converted to Es, they're just numbers, no significance or cryptic meaning, so much better than "'sQuirrel,8O9ij&Ze03 for a name or handle.
Being older means owner/admins are forced to dedicate ever more time working with our grownup toys, but really they're easier to work with than ever before; don't worry too much about learn newer methods. Asus and Asuswrt-RMerlin builds are easier to deal with than back in the olden days when DDWRT was the way to make a low-end router more functional or secure. All routers and firmware have as many different points and as many devotees. I retired well beyond the half-century mark so jobs, wife and kids no longer keep me from working on our router. Even when that was the case, it was still necessary to devote the time; there wasn't a choice, the devices need a human touch. If AI takes over the world, look out for AHnald or Cylons. If you're familiar with the Asus GUI, you'll be able to tweak the added features and AIMesh. Wives and older kids can learn and be of great assistance with the router if you're away and something should happen. Kids don't find learning tedious or boring and it teaches them responsibility.
Once you have the routers set up where they give you the correct coverage, they'll seldom need upkeep, except for the occasional security/firmware updates, but they'll never truly be plug and play. Over the years, RMerlin's fork has come to be the first thing many people think of when they buy a new Asus router. Merlin has fixed so much of Asus's code, Asus has adapted much of his work. One thing hasn't changed; router companies want to sell new routers but these days you won't have to be a wizard to tweak them; time is relative. The new Asus firmware is at least partially closed-source, but with RMerlin, we have a very secure firmware that offers great features without a steep learning curve. These days Asus seems to be taking security more seriously. Even so, without RMerlin's work, who knows how long it would've taken for OpenVPN clients/servers to have been added to the official build?
Unless you have particularly dense construction materials in your residence, there's no reason your routers can't cover 4K square feet depending on your floor plan. Placing each router 1/3 in from (equidistant) the outermost walls should provide a good signal throughout for indoor requirements. There's not any outdoor distances mentioned for what AIMesh should bring, but each country has different laws regarding wireless interference. Your gate-bell can be added securely so no would-be WI-Fi gate attacker can access your system. A separate infrared motion-detector for your drive might be something to add. We once had a wireless gate-buzzer that was more of a nuisance than anything, but the motion detector was as dependable as the dog
It seems everyone now wants multiple cameras pointed at their doors, drives etc, which adds to the WI-Fi interference and security demands.
The wireless security aspect of the outdoor elements such as your gate-bell will never be as secure as I'd prefer, not that it can be. When WI-Fi and devices are inside where transmission power doesn't have to be at the maximum power level, security is easier for the average owner to work with; outdoors, is a different subject; with increased power levels, neighbors become irritable. The further outside the wireless extends, the more your research and judgement matters. It's a convenience and headache we all have to deal with. I still enjoy being able to plug our wireless gadgets in for speed and security while everyone else wanders around. Good luck.
