In addition, you can dig into the paid side of search and find out what keywords your competitors are bidding on, and then leverage those keywords for your own organic benefit if you're not already doing so. Search Metrics does this as well, but I've found SEMRush to provide a greater range of keywords and they save more historical keyword data than Search Metrics.
6. Filter by KC and sort your list. Like some of the other filters you can input a minimum and maximum amount in the KC column and sort by that. Some people prefer to sort ascendingly to do their analysis from the easiest to the toughest keywords. For a new site try to find keywords with KC equal or under 20 or 30. Despite the super helpful KC score, you should further analyze your best looking keywords individually to be sure they are good to go. So click on them to check your top-10 competitor sites and pages.
The limit on manual keywords could be higher. I personally wish we could input 10,000 keywords at a time, instead of 200. However, I understand the costs that Long Tail Pro has to maintain each time a new manual keyword is input. Not a deal breaker, I just wish the limit was higher. (To be fair, I don't think most keyword tools have a bulk manual option at all).