Balancing a retirement and college savings can be overwhelming. Here are 6 tips that will help ease the long-term planning. USA TODAY It's never a great idea -- but sometimes it may be the best available. Thus says the internet. Think of it as the third rail of retirement advice. And, to be clear, the people who are saying it are right in almost all cases. More:Should you retire in 2018? Questions to consider first After all, we're already woefully behind on our retirement savings – according...