Whatever the club considers successful should be seen as successful. Everyone including outside doubters knows now that (injuries aside) the club is very likely to have one of the leagues top scorers. One aim should be to try and win the US Open Cup for that quick route into the Champions League. In later seasons that may not be seen as such a priority but in the initial seasons it should be unless qualification is achieved right away.
Kreis took over RSL in 2007 and won the MLS Cup by 2009. Apparently with a high turnover of players as well. Perhaps he is looking at a similar timeframe or even faster considering other advantages.