How much would it cost to build a little leauge baseball field?
It depends a lot on the size of the field. But, I would probably say around 800-1000$ if all you really need is fencing and grass/dirt for the field. But bleachers, dugouts, and other stuff would add about 350-570$.
you mean a baseball stadium? like a major league stadium or just a ball field with no stands or anything like a little league field? if a major league stadium, if you build it anything like the new Yankees stadium, around a billion dollars, lol if just a regular little league type field, probably a couple hundred dollars, depends if you do it yourself or if you hire people to do it
Chalking a baseball field is not that big a deal. You want to get as straight as you can with foul lines though. Usually a string tied to a nail from home plate to the OF fence will be a good guide for the chalk dropper. Here is a link to baseball field chalk dimensions if you wanna get really anal about it: http://www.baseball-almanac.com/stadium/baseball_field_construction.shtml
If you are generically using the word "little league" then the answer is yes. Under USSSA rules you can bat the entire lineup and after the 9th batter the remainder are called EH's (extra hitters) or terms similar. These individuals will not take the field but bat when the 10 & 11 slots come up. If you are speaking of Little League Baseball Rules (official term) then I believe you bat 9 and have substitutions.