With 4 300w panels, I don't see why you'd put them on the light mover instead of having each 300w panel cover a 4x2 area over the tray and save yourself some power and heat by eliminating the light mover. Actually, I'm just using 120w over a 4x2 area and doing rather well.

Trichome production is controlled by blue light and partially by genetics. Trichomes are produced partially as a protective response against damaging EM radiation starting at around 460nm and dropping into the UV range. If you want something for hash, you're going to want LOTS of blue, approximately 60% of the panel will need to be of blue wavelengths. Supplement that with only 660nm red for inducing flowering during 12/12 and you're good to go.