Dependence injection to initialize driver in cucumber project and use hook without terminating session

I`m trying to implement cucumber with Page Object Model and i faced couple problems and have lots of questions.

1. My iOS app is not that complex, but i still want to orginize all stepdefs and features to correspond with pages from POM. So i will have multiple stepdefs and runners. What is best practice to organize all of it ? I tried Pico DI, but wasn`t even able to pass my driver instance through it.( If you can, please provide structure solution)

2. Since its native iOS - Im not going to close app after every scenario( it will take forever). But I still want to keep features DRY for re-usability What would be the best way to create one appium driver instance and never create another until feature is executed? I understand i just need to add driver.quit in the last step. What i`m straggling with is to use same driver throughout all project(Pages, Stepdefs) (see code)

3. Im going to run tests with TestNg and wonder if @Before @After annotations still work in stepdefs or it`s better to avoid them ?

4. The MAIN question : Dependency Injection with pico. Since all my tests are acceptance (end to end feature tests) i wonder if it is good idea to create one InjectionSetUp class which will contain all my pages AND driver

Driver manager

public class IOSDriverManager {
    public static ThreadLocal<IOSDriver<IOSElement>> webDriver = new ThreadLocal<IOSDriver<IOSElement>>();

 public static DesiredCapabilities getIOSCapsLocal() {
        DesiredCapabilities caps = new DesiredCapabilities();
         //My caps
  return caps;

 public static void createThreadLocalWebDriver() {
        IOSDriver<IOSElement> driver = null;
//try catch
      driver = new IOSDriver<IOSElement>(new URL(APPIUM_SERVER_URL), getIOSCapsLocal());
//try catch
        webDriver.set(driver);
 }
 public static IOSDriver<IOSElement> getThreadLocalDriver() {
        IOSDriver<IOSElement> driver = webDriver.get();
        if (driver == null) {
            createThreadLocalWebDriver();
            driver = webDriver.get();
        }
        return driver;
    }

BasePage

public class BasePage {
    IOSDriver<IOSElement> Driver;
    public BasePage(IOSDriver<IOSElement> driver) {
     initElements();
     Driver = driver;
    }

    private void initElements() {

        PageFactory.initElements(new AppiumFieldDecorator(getDriver()),this);
    }

    protected IOSDriver<IOSElement> getDriver() {
        return IOSDriverManager.getThreadLocalDriver();
    }

}

AnyPage

public class BiosurveyPage extends BasePage {
 public BiosurveyPage(IOSDriver<IOSElement> driver) {
        super(driver); //  Appiumfield  decorator is applied by BasePage constructor
//Is it better to just use getDriver() method throughout all pages instead of declaring driver again ? 
    }

Finaly StepDefs

public class newSignUpFlowTest{
    protected IOSDriver<IOSElement> getDriver() {
        return IOSDriverManager.getThreadLocalDriver();
    }
    LoginPage poLogin = new LoginPage(getDriver());
    SignUpPage poSignup = new SignUpPage(getDriver());
      // 10+ pages 

@Given("I am on Login Page")
    public void iAmOnLoginPage() {
        assertThat("ON LOGIN PAGE",poLogin.isLoginScreen(),equalTo(true));
    }

    @When("I tap on Sign Up Link")
    public void iTapsOnSignUpLink() {
        poLogin.clickSignUp();
    }
// 20+ methods for this feature

UPDATE I fixed everything and able to run tests. Now my question is - does my framework look decent ? I dont have any real life experience prior to this. So can someone just approve me and suggest enhancements to keep up with best industry practices ? I know this post might piss some people off, but i dont know where else to communicate this as i don`t have any friends in the QA field and working remotely