I went with pretty much the exact same number of ships with one exception; I have 4 TIE Advanced.

The whole reason I got four of them is because the 21 point TIE Advanced pilots are the exact same as the 21 point X-Wings (well, they have evasion and barrel roll but they are close enough). Load them all up with the four point missiles/torpedoes and you have two well-balanced 100 point armies, which is perfect for introducing new players to the game. It is a little weird since every ship activates at the same time (they all have pilot skill 2) but you get a nice feel for the gameplay before adding in the unique mechanics that come with named pilots and upgrades.

Again, I have this for new players, especially some younger players and ones unfamiliar with miniature gaming. Otherwise, I think you have a great smattering of ships, plenty to make some great squads. You may want a third TIE Advanced and/or Y-Wing a little later down the road but it’s rare to see more than two on the field.

One last thing that sounds odd but is useful advice (imo) when you buy two starter kits; don’t mix the two decks of damage cards together. There are some ‘unique’ critical damage effects that cause problems when doubled-up. I did have both in play during a four player 200 point game but even then, we used one deck per faction.
 

 I went with enough of each to be able to do a "pure" 100 points of each ship type…so:

2 Starters

2 Exp X-Wings

4 Exp TIEs

3 Y-Wings (Yes, I know I could get more in 100 points but I kit mine out)

4 Advanced TIEs

So far I'm having the most fun running my 3 Y-Wings and am having pretty consistent success with them. I have to fly my ass off to beat a TIE swarm, but it can be done and the Wallowing Pigs are just fun!

Jim