Read through the OP, this coin has a great concept!
what happens after 5 weeks. All miners will leave, no one is going fight for 1 mint. How is this supposed to work?
Google for Proof-of-Stake Algorithm. After 5 weeks new coins are generated as a form of interest, no need for miners. The network will be secured even without miners. When holding a certain amount of coins for a certain amount of time in your wallet, new blocks will be generated automatically from it.
the question is who will process SEND transactions.