Here are some guidlines I found this summer when I tried to get over 240,000. Let's see if I can remember them correctly lol.
First Level - First Stage (11000) Second Stage (25000) Third Stage (35000)
Second Level - First Stage (48000) Second Stage (55000) Third Stage (80000)
Third Level - First Stage (92000) Second Stage (102000) Third Stage (113000)
Fourth Level - First Stage (130000) Second Stage (144000) Third Stage (159000)
Fifth Level - First Stage (175000) Second Stage (200000) Third Stage (240000)
Here are some guidlines for reaching 280000
First Level - First Stage (12800) Second Stage (28000) Third Stage (46000)
Second Level - First Stage (61000) Second Stage (76000) Third Stage (97000)
Third Level - First Stage (111000) Second Stage (130000) Third Stage (148000)
Fourth Level - First Stage (168000) Second Stage (190000) Third Stage (212000)
Fifth Level - First Stage (230000) Second Stage (250000) Third Stage (280000)
These scores can vary depending on how well one does in a different level. For example, you could horrible first level but do even better the second level. You really can't tell if you've still have a chance of reaching your goal until the end of the third level.
