i've heard this strain responds well to topping, allowing for much greater yeild...
however, it looks like you don't have room....
don't trim the leaves
for your heating prob, make a cool tube for your light, or run a duct right to it so that the heat is sucked out throught the fan.
height is good

they look great:thumbsup:

love, kp

http://boards.cannabis.com/showthrea...t=92398&page=3