updated README.md; changed to have user download either model himself

README.md

@@ -8,12 +8,21 @@ A simple python and gradio script to use Molmo 7B for image captioning. The prom
 
 Install:
 1. clone the repo
-2. cd to "models" and clone Molmo-7B-D-0924:
-   ```
+2. cd to "models" and choose a model:
+
+For max precision clone Molmo-7B-D-0924:
+```
        git lfs install
        git clone https://huggingface.co/allenai/Molmo-7B-D-0924 
 ```
-  Since the 4-bit quant isn't that large, I have included it here. There's no need to clone it seperately. The full 32-bit version is big, so I leave it up to you to clone it if you want it.
+You'll need a 24GB GPU since the model loads at bf16.
+
+For slightly less preccision, but much lower memory needed, clone molmo-7B-D-bnb-4bit:
+```
+      git lfs install
+      git clone https://huggingface.co/cyan2k/molmo-7B-D-bnb-4bit
+```
+A 12GB GPU should be fine.
 
 1. create a python3 venv or use conda to create an environment, eg:
    ``` conda create -n caption python=3.11 ```