US - Silver Hand (A)
Unless you have a really good feel for the composition of your server and their purchasing trends I would avoid flipping with a small amount of capital. Some flips can take a while to do and with a small amount of gold, I personally wouldn't be comfortable with having it tied up and not liquid.
Depending on what level your JC is, I would probably just keep it and work on it later putting my energies into mining. Check your servers mining page on the TUJ. What lower level ores are in the lowest supply both in raw ore and bars? Spend a little time each day gathering and selling that. Mine as you level along. Go back and gather the materials you need to bring your JC up to speed. It takes far less gold outlay to powerlevel your own professions than it does to purchase them from others. As for the shuffle, it's true power to yield gold is based on the ability to transform ore into the most valuable product which means that multiple characters and professions are needed, specifically JC, Blacksmithing and Enchanting. With only a miner and JC, you are limited to farming the ore, prospecting, cutting and vendoring which might not always yield the most gold. That method worked in early Cata before the vendor price of cut uncommon gems got massively nerfed, but not now.
Other advice I could give is fairly standard, loot everything, vendor the trash, auction the gear and cloth, don't buy gear or truly unnecessary items etc. If you don't already have a banker toon, then create one. Send him all your marketables and post to the AH. Get all the helpful addons (Postal, TSM etc). A couple of times a day scan your AH to develop your DB. Run vendor scans. You would be surprised at how many people post auctions (bid and/or buyout) below the vendor price. Buy/bid on all these. It may seem like peanuts but it can add up nicely over time for mere seconds of work. Regardless of how low prices might seem for gathered materials do not attempt to buy low prices auctions and reset the market price - trying to monopolize markets with a low barrier of entry is an easy way to lose all your gold.
When you decide to add more characters to your stable (to provide more professions), take skinning on these toons during the levelling process. Leathers are always in short supply and high demand. You're going to be killing creatures anyway, might as well profit more off them.
Don't take First Aid on characters with healing abilities, the cloth you gather from mobs is more valuable on the AH.
Unless you have a strong and overriding desire to have complete professions, don't learn all the recipes from the trainer, only learn the ones you need to craft something to gain profession levels.
And last but not least, the ability to keep increasing your gold depends on leverage. Rich players leverage their knowledge and/or their professions to the best of their ability and recognize that resting on their laurels is not an option. There is always something new to be learned, something new to be tried and new markets to be tested. Keep gathering information, keep taking notes, keep trying new things until you find those which are profitable.