Nice question. But don't worry, even the most experienced traders would be stuck thinking about which account would suit them better. IronFx has crafted an excellent list of account types, each different from the rest. They deserve all the praise for that.
As for swing trading, I would recommend you opt for the Live Floatghin spreads and choose between the Standard, Premium or VIP depending on the amount you intend to deposit as your trading funds. The more you deposit the better spreads you will get if you choose a more advanced account type.