This build is generated with CarbonTwelve's StarcraftFusion.
It allows you to make early reapers rush and start building an expansion at 2:30. Even if the rush is failed you'll have 2 bases, a factory and a starport in reasonable terms.
| 13 | 0:02 | | |
| 13 | 0:13 | | |
| 14 | 0:18 | | |
| 14 | 0:24 | | |
| 14 | 0:37 | | |
| 15 | 0:42 | | |
| 15 | 0:45 | | |
| 16 | 0:54 | | |
| 17 | 1:06 | | |
| 18 | 1:24 | | |
| 18 | 1:36 | | |
| 18 | 1:43 | | |
| 18 | 1:50 | | |
| 19 | 1:54 | | |
| 20 | 1:57 | | |
| 20 | 2:05 | | |
| 21 | 2:23 | | |
| 21 | 2:29 | | |
| 21 | 2:32 | | |
| 23 | 2:36 | | |
| 24 | 2:41 | | |
| 25 | 2:54 | | |
| 26 | 2:56 | | |
| 28 | 3:05 | | |
| 29 | 3:09 | | |
| 30 | 3:18 | | |
| 30 | 3:20 | | |
| 31 | 3:28 | | |
| 32 | 3:30 | | |
| 34 | 3:38 | | |
| 34 | 3:41 | | |
| 36 | 3:43 | | |
| 38 | 3:54 | | |
| 39 | 4:00 | | |
| 40 | 4:06 | | |
| 42 | 4:11 | | |
| 42 | 4:14 | | |
| 43 | 4:16 | | |
| 43 | 4:34 | |

What we have by 4:50 is as follows.
Income: 873M 456G
Buildings: 2 Command Centers (including 1 Orbital Command), 2 Supply Depots (with 1 Extra Supplies), 4 Refineries, 3 Barracks, 1 Factory, 1 Starport.
Units: 28 SCVs, 15 Reapers.