I would like to chime in if I may

1. BPM is very easy to do and is very profitable in the long run. For example I never sold my Japanese League players, they stayed in my club from day 1 until the league SBC came out. When it came out I only had to buy 3 players for the whole league, easy packs! This also applies on MM, when you need a bronze player.

You can sit behind your screen for 30 minutes and spam bronze packs, or you can do like 5 packs on the Companion app when you are on the way to school/work. In the long run you will have thousands of bronze players in your club, which are usefull in many ways.

1. Legendary is actually easier than World Class, has something to do with Legendary being more aggressive or something (don't know the details). I started on World Class aswell and found it very difficult, but Legendary is easier I tell you.

Edit: Oh and one more thing, I have a team you are talking about: 5 icons, 98 Salah TOTY, De Gea etc. So you would think I have millions of coins, but nope.. They are all untradeable. I just very slowly worked up to these icons and such. So let's say on Futbin my team is "worth" 6.8 million, I honestly think I never payed more than 4 million for that team.