16 or 18" will be fine & are much more portable & lighter than longer barreled rigs.
Good barrels can be made in light(er) contours & shoot just fine; barrel is the most important part in the accuracy equation in building the gun so don't go too cheap.
Unfortunately, you missed a lot of good prices at the end of last month; maybe there will be some more coming up before Christmas or near year end.
MM
