If you are patient and use gloves you can also press it by hand but its tiring lol. Eventually with your body heat and the pressing it works. But certainly not all that ammount at once hahaha, nice haul! You make me envious I prefeer kief over hash most of the times.
Ah, forgot to mention, if you do it by hand adding a tiny ammount of water makes it way easier to stick together if youre having problems with that or takes too long. It will dry out if you let the hash cure a bit its no biggie.
The material has to be very dry so the trichomes get knocked out, that can make it difficult to bind depending on the microns and with 150 microns most certainly you have vegetal matter in there (which means more difficult to press by hand), I use 120 microns for mine and it doesnt stick well if its very dry.
Or you could also use a bottle with warm watter as a rolling pin and put the kief inside oven paper and voila, press it with the bottle and keep folding it and repeating for consistency. Once youre happy with how it looks a couple minutes to the freezer and thats it.