I had a couple of questions about some sub classes for narrowing down what to play next. They are as follows:

Samurai Fighter: Is it equally viable as a Sharpshooter or Great Weapon Master?

Beast Conclave (revised ranger): Between and Ape and a Giant Crab, which is either mechanically superior? Also, if only playing til a max of level 10, could I make do with just 16 Dex and archery fighting style so I could grab 2 feats as a halfling?

Thanks in advance.