hey, sorry for the long absence. when i did the glass thing i fixed it to the cabinet not the bulb. i was also growing in a 1x1x3.5 box with a 150hps...from what i remember you said you had something .ike 1.5x1.5 right. if so you can do something as simple as put a few nails into the walls and rest the glass on top of it. looks janky but it works.
you really might not need it though if you get enough airflow. and honestly it is a bit of a pain in the ass so if you dont have to use it don't.
as far as strain goes i have done different ones with same setup. cali orange, blueberry, and aurora indica, g13haze, and now i have something called medi feminized and skunk fem. in any event, you can count on indicas doubling in size and sativas tripling in size (from when you flower...most of which will occur in the first 2 weeks or so of the flowering)