Feminised seed plan

Looking for bit of advice from the great pool here..

so like most I’m over buying or trying to buy seed.

I need to make a couple seed runs.
I have a few autos about 3 or 4 seeds
I have colloidal silver
I have 2 tents available.

what’s my best plan of attack here?
I’m in no rush and happy to sacrifice entire plants for good seed harvest.

I was thinking instead of selfing, and trying to avoid clones as not had great success there,
Poss start one or two earlier than other..

Anyone?

( I also have a few feminised big bud seed I’d like to do similar with)

Thanks for that, I did search and found info prior to posting, but a lot had conflicting views and unclear, your link here was most informative.