Hello Chris! Your last list is fine, myself do not like the ExoTerra low tanks too much because once you set-up a false bottom or a nice layer of substrate you end up with around 9 in. of height. Depending of the number of frogs you want to keep; either the 18x18x18 or the 24x18x18 should be OK. If going with artificial plants try to get silk ones because they are softer. Also, I prefer Seachem's Prime or ExoTerra's Aquatize to treat tap water. Recommend contact Josh if buying all items in there; might still get a package deal price if you do so

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