mate, you cant keep any of your combo's in that tank, i have a 300g and its not a very big tank at all 2x 18'' fish and it will look cramped... have you ever seen a 2ft micro, that is huge mate and they will be closer to 3ft in time, so not even one long term pal!!! people aint answering because your dreaming... have a read through the stickys in the species pages and you will understand, a silver aro's min tank size alone without other fish is stated as 450g! do some reseach bud.
do a pair of golden cobra snakeheads, that would be a nice size tank for those, they max out around 2ft!-)