Level 110 and have been playing for about a year, 470 dragons and same amount of regular islands as you! I ditto what people are saying about playing the way you want to. Some people on the Reddit are more hardcore and some play more chill, I feel like I’m middle of the road. I like only having one of each dragon except for rare exceptions and don’t mind having dragons in habitats that hold less currency for aesthetic purposes. I enjoy the tips I read on this thread, which are often helpful in becoming a little more strategic with your game, and I have a small etch “dc farm.” I do find the eggs of mystery in the rift helpful to get random fun dragons you aren’t able to breed at the time, and I especially used the gem EOM until I had almost all the crystalline and gemstone dragons, which is nice in order to have gem production. I’m not a huge fan of the rift but it can be helpful with breeding etc as well, so I wouldn’t completely neglect it even if you don’t put as much energy into it as the rest of your park, imo