I second the advice - DO NOT go with satellite. I'm not sure about DirecWay, but if you visit Star Band's website (if they even still exist), it says specifically that it is not recommended for online gaming. The 3-5 second delay will kill any chance at making split second decisions and maneuvers. You'd be killed before you even knew you were being attacked.
I play on dialup mostly and it works perfectly fine. I don't get broadband where I live. However, I am experimenting with a cellular modem which is supposed to be as fast as DSL. It's definitely faster than dialup. However, I seem to be having latency issues that I'm not sure if it's my connection or the server. A friend on broadband tells me his latency has been high lately too. It worked well the first week, then lately I've been getting a lot of lag. For instance I'll notice my pet quit following me or there are suddenly no mobs around. I'm still trying to figure out of there's something interfering with it on my end or if cellular just isn't good for gaming. I'm not sure why I had no issues at all in the first week, then suddenly I can't get a good connection (despite a good signal.) I'm rambling now, so I'll stop.
Go ahead with dialup. You'll be fine. Updates suck.
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Courtelise
FFXI -99 RDM/99 BST
Server: Fairy (RIP)->Sylph
FFXIV - Noob