10 mollies = way to many, unless your getting the smaller 2-3 inch kind, I would get around 5, be sure to do around 1 male and 4 females or if your getting 10 get around 3 males and around 7 females, beware they are fry machines! youll get around 100 fry a mounth per molly so thats a heck load of fry.... also, Im not too fond of dwarf frogs but that is in my opinion...
Heres what I would do (My opinion):
5 mollies - 1 male/4 female or All female
5 ottos
1 Pleco
2 Dwarf Gouramis or another fish of your choice