Hi there.
Twi bits of advice-: Don't stress too much, it's a weed, they love to grow, just don't let them wilt from underwatering and the other bit is learn some patience, it really is a growers best friend.
Good luck all the same
I bought some sensi star from Paradise seeds before, it was ok, but they gave me a freebie of Nebula, that's definitely worth a go, not only was the plant amazing the high was something else. Wish i'd kept that cut but being as it was my one and only seed I have high hopes for something coming out decent from a pack.
A good few people have mentioned Moham Ram being one to grow out (Sweet seeds I think)