Since my overall goal is to have a trainer card with 5 stars, national dex completion being one of them, yes I will. I don't think filling the dex will be that hard, to be honest, especially since Pal Park doesn't have a 24 hour limit like in D/P/Pt. I'll just park as many 1st and 3rd gen pokemon as I can and try to keep the one-for-one trading to a minimum. The only hard part will be trying to trade in 4th gen version exclusives, which is why I'll be doing that first.
This will also be the very first time I've had the opportunity to catch ALL the pokemon, since there will be events for Mew, Deoxys, and most likely Celebi, so I'm quite excited at the chance to actually "finish" the game.