You basically have two 4.0 setups.
AS-F2.2 and WS-15 surrounds. Both use the same 1" Teteron tweeter
LS-300 with LS-50 surrounds. Both use the aluminum dome tweeter. LS-50 is only 3/4".
The F2.2 is clearly the best speaker of the bunch, more powerful and better performing than the LS-300. Finding a matching center channel may be difficult since the AS-C1 had been discontinued for quite some time. You could also use a AS-B2 or AS-B1 bookshelf speaker as a center channel also if you have room. I've seen those on ebay for a low price.
The matching center channel for the LS-300s is the LS-C100. The Mirage Omni C150 is a rebadged LS-C100. Athena and Mirage are sister companies. You can find a C150 here new on ebay.http://cgi.ebay.com/MIRAGE-OMNI-C150...item3a54c2a15f
The Athena version is herehttp://athenaspeakers.com/products/ls-c100-overview/
Now if you only want to use what you have and not add a center channel, go with the F2.2's up front, and LS-300s as surrounds if you have space. If you don't have room for tower speakers as surrounds, use the WS-15s as surrounds and perhaps the LS-50s as rear surrounds if you have a 7.1 receiver.
You didn't mention what equipment you have. What receiver do you own and do you also have a subwoofer?