So after about an hour last night I was able to successfully get SLIM running on my phone. The order of events was as follows:
Note: I was coming from Galnet Miui 2.11.26
1). Downloaded base rom + essentials package
2). Data/factor reset --> Flashed base rom through CWM = boot loop
3). Rebooted into CWM, data/factory reset --> Flashed again through CWM = boot loop
4). Used Odin 1 click to install 2.3.4
5). Installed EZboot GB boot loaders
6). Flashed SLIM again --> boot loop
7). Repeated step 4 and 5
8). Downloaded and flashed - teamhacksung's build 16
9). THS16 worked/phone booted
10). Rebooted into recovery and flashed SLIM base rom + essentials package with no problems
11). Phone now has SLIM ICS on it
So tldr; Stock 2.3.4 --> EZboot GBL --> THS16 --> SLIM + essentials
Works perfectly. This ROM is awesome.