No - it needs setting up over a much longer time period to ensure that expansion targets you don't want are lower priority (e.g. by expanding other factions into them) and the one you want is higher priority. If your faction is present in multiple systems, then balancing influences above or below 75% to ensure that the expansion starts from the most advantageous system is usually necessary. Some player groups are very organised and good about this, but it takes a lot of coordination to really get right, and it helps if other player groups are not trying to do the same thing in the same region...
The priority order is:
First priority: systems which have less than seven factions present, no previous retreats. Closest system within priority is chosen. If none exists, go to second priority.
Second priority: systems which have less than seven factions present, previously retreated. Closest system within priority is chosen. If none exists, go to third priority.
Third priority: systems which have exactly seven factions present, including a non-native target faction not currently in a conflict. System with the lowest influence target faction is chosen (effect of previous retreats is uncertain). If none exists, go to fourth priority.
Fourth priority: no expansion this time, next expansion has extended range. If this expansion already had extended range and still couldn't find a valid target, then this system will not generate any expansions at all for a while.
The priority order is:
First priority: systems which have less than seven factions present, no previous retreats. Closest system within priority is chosen. If none exists, go to second priority.
Second priority: systems which have less than seven factions present, previously retreated. Closest system within priority is chosen. If none exists, go to third priority.
Third priority: systems which have exactly seven factions present, including a non-native target faction not currently in a conflict. System with the lowest influence target faction is chosen (effect of previous retreats is uncertain). If none exists, go to fourth priority.
Fourth priority: no expansion this time, next expansion has extended range. If this expansion already had extended range and still couldn't find a valid target, then this system will not generate any expansions at all for a while.