what can silchids be kept with?

i have,

2 clown loaches
2 silver sharks
6 black skirts
1 pleco
1 albino cory

would they be o0k with any of these?

also do u think there is more room for more fish? the tank is 4 foot long an 2 deep?

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0.0.1 anery corn snake
1.0.1 bearded dragon
0.1.0 berber skink
1.0.1 leopard gecko
2.0.0 cats
loads of tropical fish

could go with the following (not all of them)
-keyholes
-festivum
-apistogramma (any species of these would be fine)
-rams
-kribensis
-angels

there's a few that might be ok, but might not:
-severums
-uaru
-theres a few acara that would be ok, some geophagus

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1.1 leos, 1.1 fat tails, 0.2 Beardies, 1 Whites, 2.0 Cresties, 4.1 Cats, Fish: 4.4 P. Dovii, 5.5.6 Peacock Bass (5 sp), 1.1 C 'Cobra', 1.1 festae, 1.1 green terror, 1.1 nics, 1.1 C. Marmorata, 1.1 C. Johani, 1.1 C. 'Strigata', 1.1 C. 'red tapojas'; 1.1 P. Friedrichsthalli, 1.1 Mots, 1.1 managuense, 1.1 H. Bocourti, 1.1 H. Pearsi, 1.1 H. Carpinte, 1.1 H. Cynoguttatum, 1.1 V. Argentea, 1.1 V. Zonatus, 1.1 N. Salvini, 2.2 Grammodes, 3.4 Hoplarchus Pssiticus, 2.2 Trimacs, 3.4 haitiensis, 1.1 tetracanthus, 3.2 Red tiger mots, 14 Uaru (2 sp) 1.1 Umbies, 2 Arapaima, 3 Red tail catfish, 1.1 P. Leopoldii, 1.1 P. Motoro, 3 Silver Arowana, Var. polypterus, var. Channa sp, M. wyckii, 3 siamese tigers, 2 jelly catfish, 1 Golden dorado
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