I sincerly wouldn't have known where to start if we did it from scratch! We made a lot of upgrades to what was already there but it was a really go thing that there was something to start with!

Good luck on the gutters. That's a pretty monsterous job too. We put new gutters on the house this summer and I'm glad my man is good with the engineering because he certainly is a perfectionist about getting them all sloped right for maximum drainage! Next year he wants to put the screens over them to keep the junk from falling/blowing into them and plugging the drain spouts. He says it's a harder job. I dunno.... !
On the other hand, it feels great once it's finished! 😊 Go for it!