Question - Batch Processing

I'm processing a batch of approximately 100 prompts, each ranging from 1,200 to 14,000 tokens in length. Given that the input context length must be specified during model initialisation, I'm considering two options:

1. Initialize the model with the maximum token length of 14,000 tokens.
OR
2. Instantiate the model each time with the required context length.

Are there other avenues I should be exploring?