How would you silo these long tails?

Lets say we had these keyword variations:

kw
best kw
best cheap kw
best kw for teenagers
best purple kw
cheap kw
diy kw

would you go this deep for the best KWs?
siteurl.com/kw/best
siteurl.com/kw/best/cheap
siteurl.com/kw/best/teenagers
siteurl.com/kw/best/purple

then keep things without best under the main kw
siteurl.com/kw/cheap
siteurl.com/kw/diy

would you ever keep DIY under the best page? or could that confuse google
siteurl.com/best-kw/DIY

especially where some pages don't have…

How would you silo these long tails?