To qualify for the 500k Guarantee I would recommend the 37+3$ Satellites where one in 6 entrants qualify if I remember correctly. It's an easy way to get in but with your bankroll I would go for the $3+rebuy ones. As Jeanie said, there are quite a few each day.

With your bankroll the 5+0,5 and 10+1 MTT's are the most interesting. The 3,3+rebuys with 10,000 guarantee is one of the most interesting tournies on stars since there is alot of rebuys etc. Which adds up to a nice price pool and with alot of new players.