greenhouse love

i got my medi card and want to go outside,

i was thinking bout building a greenhouse..
making the frame out of pvc, reinforced w/rebar
then covering it with solexx... solexx is white cant and you cant see through it...

im just trying to think of everything im going to need...
id like to hear anyones ideas or comments..

large exhaust/intake
w/carbon scrubber
lots of fans/

how big should i dig the holes for monsters?
(i know im getting a late start) but i want plenty of room for the roots..

im thinking bout even running co2 (making high temps ezier to deal with)


what you guys think?