Comparing High Traffic/High Competition to Lower Traffic/Lower Competition

Ok I have a question:

I have 2 different keywords say "super motor boats usa" vs "super motor boats alaska"
the one with usa has 110 avg searches a month but .93 competition.
the one with alaska has 20 avg searches a month but .77 competition.
I can only choose 1 as the target keyword for my title tag for example.

is there a unit or scale to combine both search volume and competition to choose which one?
do i use my gut feeling?
is there a more logical way to choose from the two as a target keyword?

Gut feeling. Otherwise, technically the one with 100 searches will be more difficult to rank for.

If you just want to rank for somethign very specific, go for specific, regardless of how many searches it has. If you just want traffic then you oughta go for the more popular kw.

You can target more than one keyword on any given page. I do it all the time. Just use these: |
So for my H1 tag I do: Keyword 1 | Keyword 2
For my title I do the same thing.