Guns, Dogs and Blades QnA

AR-15 disassembly questions here for the in the know types.

I bought an armorer's tool and went to remove the buttstock on my PSA. Found it is staked in, and done very well. It can't just be twisted loose without very special tools. Although some Dremel work would get it I think. The reason for removal is I want to break the rifle down for motorcycle carry. Is this idea worth pursuing or am I starting out with the wrong type of rifle? Is it smart or reasonable to be removing the buttstock often on a standard AR?

Is the lower with butstock attached any shorter than the upper with barrel?