All things work together for good?

NRS Romans 8:26 Likewise the Spirit helps us in our weakness; for we do not know how to pray as we ought, but that very Spirit intercedes with sighs too deep for words. 27 And God, who searches the heart, knows what is the mind of the Spirit, because the Spirit intercedes for the saints according to the will of God. 28 We know that all things work together for good for those who love God, who are called according to his purpose. 29 For those whom he foreknew he also predestined to be conformed to the image of his Son, in order that he might be the firstborn within a large family. 30 And those whom he predestined he also called; and those whom he called he also justified; and those whom he justified he also glorified. 31 What then are we to say about these things? If God is for us, who is against us? 32 He who did not withhold his own Son, but gave him up for all of us, will he not with him also give us everything else? 33 Who will bring any charge against God's elect? It is God who justifies. 34 Who is to condemn? It is Christ Jesus, who died, yes, who was raised, who is at the right hand of God, who indeed intercedes for us. 35 Who will separate us from the love of Christ? Will hardship, or distress, or persecution, or famine, or nakedness, or peril, or sword? 36 As it is written, "For your sake we are being killed all day long; we are accounted as sheep to be slaughtered." 37 No, in all these things we are more than conquerors through him who loved us. 38 For I am convinced that neither death, nor life, nor angels, nor rulers, nor things present, nor things to come, nor powers, 39 nor height, nor depth, nor anything else in all creation, will be able to separate us from the love of God in Christ Jesus our Lord.

I have heard this scripture used for funerals.  Nothing shall separate us from the love of God in Christ.  These verses are full of theological ideas and discussion points.
1.     Spirit intercession "with groans too deep for words"  So when I don't have the words God's Spirit has my back and shares for me.

2.      Predestination anyone?  Does this mean that God already has it (salvation) worked out or God already knows who will accept and who will not?

3.     All things work together for good?  Everything is good?  So I am just not looking at it right?  It is a mystery to me, because I have trouble seeing the good in some of the grossly evil things that go on in this world.  How deep or how far back do I have to look to see something truly evil as working together for good?  I don't want to be too simplistic or "Polly Anna like" with this scripture.  I do believe that God's plan is for life to be beneficial which is what the Greek word for "good" can mean.  All things then work together for our benefit for those who trust God.

4.     If God is for me then who can be (successful) against me?  God does not give me super power or make me untouchable.  God helps me know that when evil comes and wishes to rail against me or tries to take me down; that I can be assured by God nothing will be able to successfully separate me from God's love.  Especially that love testified and witnessed to by God's decisive action displayed in the life, death, and resurrection of (God in human form) Jesus Christ.

There is so much to discuss.