trans?/Sex?/ is it time?

hey guys, hows it growin?

lol anywayz this is week 6 and she's 12" inches tall
My primary questions are these:

1.Should i transplant it? i transplanted 2 times already this being the biggest pot!
2.is it time for 12/12 light? i started 12/12 2 days ago but still under the 6500k lights
3. Should i trim her? and if yes where?
4. if i wanna keep her that height and still bud what are the steps to take?

ther is more questions but i cant think of em all

Any strain guesses? im thinking indica

!!!!!!!!!!!!!PICTURES PICTURES PICTURES!!!!!!!!!!!!

I would bend the top down so the side branches start growing.

No trimming is needed.

Ok, I Have Similar Questions. How Do You Start From A Seed And Get It To Start Sprouting Into A Plant?
Im A Total Noob When It Comes To Growin.
Also, Can Yhu Keep A Plant At 12"?