Hey TGK, welcome to the FFR community.
It depends what you mean by a 'high rank'. A high overall grandtotal-based ranking is impossible with a few game plays, because the overall-ranking system is based on your total score for every game you have played on FFR. This ranking is inaccurate in terms of skill. The most accurate ranking system FFR currently supports is known as the 'Tier' system.
This is copied directly from my FAQ:
Tier Points:
Perhaps the
most accurate ranking system is the
Tier Point System.
Make sure to give the tier point thread a visit. You can find all the information you need to know about this system
here.
For future reference, you can find the same thread through
FFR General Talk >
TOP Players / Tier Requirements Thread - Updated 5/8/08.
It is possible to achieve a high skill-based ranking in terms of tiers with a minimal number of gameplays, however, it may be a challenge to achieve. Keep up to date with your
tier points and climb your way to T0!