my answers are -
1 - not likely. you'll have to respace the rear hub axle, shim the chainring on way or another, or both. Once you have chainline right, redish the wheel. you want to get the chainline right so take time to do so.

2 - no, and possibly. you might get lucky. But those half links sure are cheaper than experimenting with different sprocket combos or an eno centric. you can give it a shot before removing all the deraileurs and whatnot. see how close you are. guess.

good luck