everyone has their own little tricks when popping beans. I drop in tap h2o until shell splits and tap root pops out. then into a wet paper towel and into a ziplock baggie set in cupboard above fridge for 2-3 days. not letting paper towel dry out. then into my R/R plugs and into my seed propagator/humidome/heatmat/T8 6500k 24/7.
65 is kinda low for germinating seeds. I grow in my basement, and popped germ'd seeds down there. I used a 6500k t8 24/7, dome, heat mat (with towel between the tray and mat), and left the dome closed. opening 2x daily for misting and fresh air.
imo, your lights off temps are too low. I try for a constant 80* for germinating seeds until at least the first few set of leaves. then the heat mat gets removed, and the vents opened a tad.
I have tried several techniques and have had the best luck(so far, only on second grow) with soaking the seeds for 12 hours in room temp water then strait into soil, cracked or not. Every plant I did this to has germinated and is growing well! That's 100% success with 4 fem autos and two fem photos. =P