My rental strategies from bronze to silver

Hi all splinters!!!!
Today i want show you my future rental strategy to maximize rewards and win ratio!

First of all, Splinterlands help the small players to grow their account trough renting cards instead of buying them! Since the game increase its popularity the cards prices went rapidly up and all the market is now more expensive than previous, so renting is now a suitable method to grow into the game.
At the moment renting still more affordable than previous months but now the rewards are lowered.
In order to maximize them we can choose multiple ways:

1.Rent all level 1 CL GF cards that we use during our battles in order to maximize the rewards, all GF cards increase the base rewards by 10% and can be stacked up to 70% (max numbers of cards we can use during our battle).

2.Rent CP to moving up our account to silver III or more, in order to maximize the rewards we need to know that if we have ELO to play in Silver II but we have only CP to sit in Silver III we earn DECs based on the top of ELO of the Silver III league. For example, currently we sit in Silver III due to CP limit and we have a 1500 ELO, our reward is calculated considering ELO 1299 (maximum ELO for Silver III), grind over 1299 ELO does not help us to increase our rewards!!! Due to my actual experience in Bronze, i suggest to rent CP when we can switch to Silver III league (1000 ELO and 15000 CP) because is crucial win as many game as possible in order to pay out our rentals with rewards of the game to move up our DEC balance and rent more CP to advance in the leagues.

3.Rent two max tier decks. We pick two summoners (i suggest Earth and Water) and rent max tier cards to maximize our win and earn more DECs per game. We can combine this strategy with renting CP to maximize our rewards.

Actually, for this season i decided to sit in bronze but definitely i want to try the third strategy because i think now bronze league is too balanced and the rule set is quite boring. I like to play with more mana cap and enjoy the rule sets of the game finding the best strategy to win the battles.

Do you like my strategy to maximize my rewards? What do you think is the best strategy?
Any suggestions are really appreciated!

See you soon in the field!!!