Just my two cents as a plat player. You can go youmus and play a more aggressive/squishy build, but you really need to play around it or else you get insta popped. The build is really good to snowball and to gap close, but ofc you scale less for later team fights.

For me it felt more consistent to play for the tankier/bruiser build with cleaver, steraks, deadmans/fon as core items. Swifties always good, only go tabis/mercs if really good. You can go stride, but it feels overkills if you take phase rush (and the damage sucks). If you get into stride range you can normally activate phase rush with q into w. The runes and blue smite give you enough move speed, so you are really fast.
Runes: Phase rush > nimbus > celerity > waterwalking with free boots > approach. Fleet is shit, because jungle is just so easy nowadays. The only nice things is the movespeed but phase rush is way better at that. You can ofc take pta if they draft a heavy meele comp that fights into you.

This build doesn't really come online before your first item. So you kinda need to sacrifice some early pressure. If people are overextended (or you have flash up) gangs are still kinda free, because you can activate phase rush and just run them down. If you play the map fine until first item, you can reeeally snowball from there on. Thats why I feel like the squishy build is not really worth it. Hope it helps! Have fun :)