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As mentioned, there are some great articles on this site about getting started. You may be able to get by a bit cheaper by just purchasing the tank and stand locally and orfering most of the other hardware online.
1. I would skip the canister filter and rely on good biological filtration (LR
) with good skimming for the majority of your filtration needs. You can add a HOB
or better yet a sump to aid in more biofiltration as well as mechanical and chemical filtraion.
2. I would go with two 200watt heaters. If one fails you will have a back-up in the tank.
3. a swing arm hydrometer will work to start with, but make sure you have the LFS
verify the reading with a refractometer. they are notorious for not being too accurate.