Help understanding Liquidity Pools / First Listing / Creating a Token

Hello,

I am attempting to understand Liquidity Pools (LP) a little better and am struggling to find answers to some of my questions. Any information or direction would be helpful. Please keep any negativity out of the comments, not looking for scrutiny.

Let's say you started a cryptocurrency. You have a supply of 400,000,000,000,000 BLAToken. You have 5k-10k for the LP. 5% of every purchase goes back into the LP.

1. How do you decide how much to load to set the initial price?
2. Once you set that initial price, how do you load more tokens on if you don't have any more money to put into LP, Say you're broke, but you hold a large sum of BLAToken that are worth a lot more now?
   1. Once the current supply sells, could you sell a small amount of your private supply of BLAToken and put that back into LP to add more tokens?