Shooter enemies spawning without editor on iOS

Question

I have found this question with some very brilliant answers. I really like the "distance from bottom of the screen" spawning approach and the fact that the enemies flow can be easily visualized on an editor.

However I am an independent developer and do not have much time now to work on an editor. I am also using Cocos2D which allows me to place the enemies node in a position relative to layers and hence if I choose a certain spawning position it can be relative to the screen layer and not to the map relative position.

So my editor is a function call that calls a series of the following methods:

-(void) loadEnemiesSpritesForLevelOne{
    [enemiesSprites addObject: [EnemyEntity enemyWithTypeAndSpawnTimeAndMovementTyp:CoolEnemy :3.0f :BezierSemicurveA :CGPointMake(160.0f, 480.0f)]];
    [enemiesSprites addObject: [EnemyEntity enemyWithTypeAndSpawnTimeAndMovementTyp:CoolEnemy :5.0f :BezierSemicurveA :CGPointMake(60.0f, 480.0f)]];
    [enemiesSprites addObject: [EnemyEntity enemyWithTypeAndSpawnTimeAndMovementTyp:StupidEnemy :7.0f :BezierSemicurveA :CGPointMake(60.0f, 480.0f)]];
    ...etc...
    [enemiesSprites addObject: [EnemyEntity enemyWithTypeAndSpawnTimeAndMovementTyp:BigBoss :104.0f :BezierSemicurveA :CGPointMake(160.0f, 480.0f)]];
}

where: - enemiesSprites is an array of enemies objects that gets parsed when the "scene update" method is called - when the spawn time arrives the enemy spawn method is called

Is there anything bad on this approach or any improvements I could apply?