Wong T, I support your advice! I also think that in such circumstances it's better to start with Mini account. Given its trading conditions, it will be perfect in such situation.
I think this broker specifically created such account system. It allows traders with any experience and deposit size to open trading account with suitable conditions.

For these types of trading I would definitely recommend you the more expensive accounts. Not because they have much better trading conditions or something, not at all.
It's because you need to have a substantial amount of money to be able to open big volumes. And big volumes are required because you don't want to wait for a couple of months and earn $300 from 0.05 lots. That is simply not rational.

Hm... that is a nice question, but you have to appeal to your personal financial capabilities in the first place. It matters more, since the accounts are picked by this criterion.
Since it's a swing or positional trading, the spreads don't bother you much, so you can opt for Mini account. It requires the smallest sum of the deposit, have the widest spreads among all of them, but they are still narrow compared to offer from other brokers. Usually they float from 1.2 to 2.5 pips depending on the asset, volatility, liquidity and other stuff. Try to trade using Mini, then deposit more money and switch to Basic. Simple ;)