can i start this game and be fairly strong with 354fg and how often will i be able to play in groups?

nope and not often at all

Fairly strong probably not.

Can you start? Yes.

Groups will come with time I'd say, if you become known as a decent slasher or get in a guild that slashes

Not worth to play. Game owner isn't updating it at all.

nope

You wouldn't know
Yes 300 fg is stronk

the updates i have seen since i am not playing anymore didn't make me come back, so no viable update within years... sry