If you want to experience all three endings, then you should save before making a decision. The best option to choose is Deathwish as its the only option that sees all three characters survive.
The very first heist gamers are tasked with is the Jewel Store Job, and here are the steps that need to be followed to ensure maximum profit. Choose option B 'Smart Approach'. Employ Rickie Lukens as the hacker as he provides the best money to time ratio. Other hackers may allow more time but are also more expensive.