What DataType should I use?

I’m wondering what is the best DATATYPE to use to a few fields. This is all stock data; I have one DATETIME field and several VARCHAR(MAX) fields; this is fine. 

I’m just wondering about a few other fields.

I have something called Weight; it looks like this: 0.0055104518

I have something called Weight; it looks like this: 1240298.89

FX Rate could look like either of these: 95.33   or   0.00862701117198

Float could look like this: 20014665.91

Total_MCAP could look like this: 24824167.99

Finally, Index could look like this: 130062.43

I’m thinking that all these numeric will be either MONEY or DECIMAL (19,4) or even NUMERIC(19,4). Is that right?  Can someone give me a little guidance on this?

Thanks everyone!

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