You should be fine if you don't want to grow sps
and want to do a lot of water changes. 10-11 fish in a 34g tank is a lot. You will only have roughly 24-28 gallons of water after equipment, sand , and rock displacement. I would go with the firefish, clowns, and either the chromis or an angel and the Midas blennie. One angel makes probably as much waste as 3-4 chromis. I have the following in my biocube 29 and consider it heavily stocked.
-2x Clarkii clowns
-1x coral beauty angelfish
-1x 4 stripe damsel
-1x royal gramma basslet
-1x mandarin dragonette
-1x Randalls gobie
-I also had a lawnmower blennie who went after a piece of algae that stuck to my mini carpet and became lunch.
Just my 2 cents. Not saying you can't do all those fish, but don't plan on SPS
and plan on a good amount of water changes. Also invest in a controllable powerhead like the koralia 2's or ecotech's to stir up all the extra waste