I'll be planting both of those too.
I tried Seabuckthorn from seed last year, got plenty to germinate, but I didn't harden them off enough/baby them once I got them outside.
I've ordered plants from Burnt Ridge, and am trying another round of seeds this time with more attention to detail.
For Goji a single berry even from a store bought "antioxidant mix" will likely yield more than
enough seeds to start. I've had almost 100% germination which is pretty impressive. Can't help on the allergy issue.
Good to know someone else is growing the Eleaeagnus.