273 time to 'fish or cut bait'...
Thanks for the head PN OP! Good for you: you got the higher CR ones.
The Egge L2221 2BBL pistons are .041 in the hole, not .020" in the hole. (Compression height is 1.781".) With a .039" thick head gaskets, guessing at 60 cc's on the chambers (No, they won't be 57 cc unless milled and 60 may be on the small side), and 6 cc valve reliefs, the static CR will be around 7.9. That is not going to be torquey at all and add that to a small displacement, you would need to go with higher gears.
At least with the E4 cam, and the 2 BBL pistons, the DCR will be around 7.0. But that is not all that good with the small displacement and shorter stroke.
IMHO, time for the L2222 higher compression pistons; at least there is a fighting chance to be at a true 9:1 static CR. The DCR with the E-4 will now be up near 8:1 which is as far as I would like with iron heads. Ignition timing will not need to be so aggressive.