DIY Greenhouse Project -Added elevated raised beds & temp/humidity control

We loved this greenhouse plan from AnaWhite and wanted to be able to grow in 3 seasons so we modified the design to include humidity & temperature control & 18" deep elevated cedar beds inside with 4x4 posts for support and trellis option. We added electricity in order to have a lighted workspace and the ability to put in a circulating fan to control mold and fungus. We added 2 work tables (2x2') on the inside of the door left and right side door in order to do seed trays & store supplies. This was a wonderful project for my husband and my plants inside are doing incredibly well compared to my outside garden beds here in zone 5. Products used:

Foundation
We had a landscape company come and scape/dig a platform and then fill/compact with crushed rock
My husband then used rebar driven into a 4x4 frame in order to secure the frame to the ground and create a base upon which to build the greenhouse

Active ventilation
AC Infinity Cloudline T8 Inline duct fan
Air king range hood wall cap 8" on the bottom outside of the greenhouse wall for air intake + flex 8" duct to the fan itself
Shelter logic autovent automatic shelter vent kits (1 on each side of the front wall) in order to allow air intake from the bottom back of the greenhouse under the elevated beds to flow to the front of the greenhouse and out
Circulating fan- Hurricane wall mount fan 16" - this fan has 3 speeds with tilt function and small mounting bracket

Soil - sourced 3 yards of 50/50 loam/compost from local landscaping supply
60% loam
30% organic compost
10% organic topsoil + perlite

Soil beds
-cedar frame 2 feet wide along sides, 3 feet wide on the back wall
-galvanized metal roofing with holes drilled into it for drainage
-landscape cloth lined